vis-timeline/HISTORY.md

Create a fully customizable, interactive timeline with items and ranges.

# vis.js history
http://visjs.org


## 2017-10-12, version 4.21.0

### General
- Added #3394: Adds unit tests for add, setOptions and on/off DataSet
- FIX #3406: Eliminate possibility of 'window is undefined' during travis test
- Added #3402: added @macleodbroad-wf to the support team
- REFA #3442: Strapping down of Extend-routines in util.js
- FIX #3392: Addresses TODOs in Queue unit test by adding unit tests for setOptions and destroy
- Added #3354: Adds missing jsdoc and adds lint rule require-jsdoc to build process
- Added #3331 - Enable linting for Travis
- Added #3312, #3311, #3310, #3309, #3308, #3304 - Add lint
- Added #3230 - Enable 'eslint'
- Added #3262 - Upgrade packages and tools for Travis unit testing
- Added #3287: Update module versions to latest stable
- Added #3295: Update the webpack example

### Network
- FIX #3554: Relax clustering condition for adding already clustered nodes to cluster
- FIX #3517: Retain constraint values in label font handling
- REFA #3507: Cleanup and refactoring PhysicsEngine 
- FIX #3500: re-adds edges if they are now connected and add does not add invalid edges
- FIX #3486: Add extra check on null value during label handling
- FEAT #824: Network detect clicks on labels
- FIX #3474: Adjust documentation for arrows.middle.scaleFactor
- FIX #3483: Prevent image loading for hidden cluster nodes
- FIX #3408, #2677: Fix handling of multi-fonts
- FIX #3425: IE performance improvements
- FIX #3356 and #3297: IE11 svg image fixes
- FIX #3474: Make negative scaleFactor reverse middle arrow correctly 
- FIX #3464: Fix handling of space before huge word in label text
- FIX #3467: Adjust for-in loops so they can deal with added properties in Array and Object prototype 
- FEAT #3412: Add endpoint 'bar' to Network
- FIX #3403: Fixes sorting on Layout, refactoring
- FIX #3421: Added default sizes for nodes without labels
- FEAT #3418: Added new Hexagon shape in the Network
- FEAT #3368: Cluster node handling due to dynamic data change
- FIX #3395: Allow for multiline titles
- FIX #3367: Network Clustering fixes on usage joinCondition for clusterOutliers()
- FIX #3350: Fix setting of edge color options via Network.setOptions()
- FEAT #3348: Add edge styles support for DOT lib
- FIX #2839: Re-words documentation to reflect symmetrical input/output of get() when passed multiple ids
- FIX #3316: Updates network documentation to account for edge
- FIX  #1218, #1291, #1315: Dynamically adjust clustering when data changes
- FIX #2311: Block recalculation of level in LayoutEngine._determineLevelsDirected()
- FIX #3280: Cleanup mergeOptions() and fix missing ref on globalOptions in mergeOptions()
- FEAT #3131: Added dragStart event for adding edges
- FIX #3171 and #3185: Fix infinite loop on drawing of large labels
- FIX #3220: Update hierarchy when node level changes
- FIX #3245: Multiple base edges in clustered edge
- FEAT #1222: Add pointer data to hover events
- REFA #3106: Refactoring and unit testing of Validator module
- REFA #3227: Refactor LayoutEngine for further work
- FIX #3164: make 'hidden' and 'clustered' play nice together
- FIX #2579: Allow DOM elements for node titles
- FIX #2856: Fix manipulation examples for Network

### Graph2D
- FIX #1852: Correct documentation for graph2d’s moveTo function

### Graph3D
- FIX #3467: Adjust for-in loops so they can deal with added properties in Array and Object prototypes
- FEAT #3099: Add option definitions and validation to Graph3d
- REFA #3159: move Filter into DataGroup
- FEAT #3255: Add unit tests for Graph3D issue
- FIX #3251: Graph3d put guards before unsubscription in DataGroup
- FIX #3255: Fix missing reference to Graph3D instance in DataGroup

### Timeline
- FEAT #3529: On timeline loaded
- FEAT #3505: Drag object in to item
- FEAT #3050: Allow disabling of RangeItem limitSize
- FIX #3475: Item Redraw Performance - Bug Fix
- FIX #3504: Fixing a bug with the timing of the final setting of the vertical scroll position
- FIX #3509: Added describe sections to PointItem unit tests
- FIX #2851: Vertical focus
- FEAT #620: Subgroup stacking
- FIX #3475: Improve Item redraw and initial draw performance 
- FIX #3409: Group redraw performance
- FEAT #3428: Adds locale for Chinese (cn)
- FIX #3405: fix orientation option
- FIX #3360: Add performance tips to timeline docs
- FIX #3378: Add item with ctrlKey/metaKey when dagging on a selected item
- FIX #3126: Nested groups order logic
- FIX #3246: Fix issue when showMajorLabels == false is used with a weekly scale and weekly scale minor label fix
- FIX #3342: Bug fix for null parent
- FIX #2123: Disable the default handling of the pinch event when handling it
- FIX #3169: add parenthesis around ternary
- FIX #3249: Only draw non-visible items once when they are loaded, instead of continuously every frame
- FEAT #3162: Bidirectional scrolling in timeline - make horizontalScroll and verticalScroll work together


## 2017-07-01, version 4.20.1

### General
- Added Release checklist 
- Added collapsible items for objects in graph3d doc

### Network
- FIX #3203: Set dimensions properly of images on initialization
- FIX #3170: Refactoring of Node Drawing 
- FIX #3108: Reverse nodes returned with 'from' and 'to' directions
- FIX #3122: Refactored line drawing for Bezier edges
- FIX #3121: Refactoring of `BezierEdgeStatic._getViaCoordinates()` 
- FIX #3088: Consolidate code for determining the pixel ratio
- FIX #3036: Smooth type 'dynamic' adjusted for node-specific option in hierarchical
- FIX #1105: Fix usage of clustering with hierarchical networks
- FIX #3133: Protect Network from zero and negative mass values
- FIX #3163: Prevent crashes from invalid id's in `Clustering.findNode()`
- FIX #3106: Ensure start and end of stabilization progress events is sent
- FIX #3015: Properly handle newline escape sequences in strings for DOT
- FIX: Refactoring of LayoutEngine (#3110)
- FIX #2990: Edge labels turn bold on select and hover
- FIX #2959: Changed order of (de)select events for network
- FIX #3091: Added param 'direction' to Network.getConnectedNodes()
- FIX #3085: Add prefix  to cancelAnimationFrame()

### Graph3D
- FIX #3198: Small fix on ref usage in DataGroup
- FIX #2804: Add data group class to Graph3d

### Timeline
- FIX #3172: Fix stacking when setting option
- FIX #3183: Fixes a race condition that set an item's group to be set to undefined
- FEAT #3154: Caching to Range getMillisecondsPerPixel function
- FIX #3105: Adjusting timeline TimeStep.roundToMinor
- FEAT #3107: Allow overriding `align` per item

## 2017-05-21, version 4.20.0

### General

- FIX #2934: Replacing all ES6 imports with CJS require calls (#3063)
- Add command line options to mocha for running tests (#3064)
- Added documentation on how labels are used (#2873)
- FIX: Fix typo in PR template (#2908)
- FIX #2912: updated moment.js (#2925)
- Added @wimrijnders to the support team (#2886)

### Network

- FIX: Fixes for loading images into image nodes (#2964)
- FIX #3025: Added check on mission var 'options', refactoring. (#3055)
- FIX #3057: Use get() to get data from DataSet/View instead of directly accessing member \_data. (#3069)
- FIX #3065: Avoid overriding standard context method ellipse() (#3072)
- FIX #2922: bold label for selected ShapeBase classes (#2924)
- FIX #2952: Pre-render node images for interpolation (#3010)
- FIX #1735: Fix for exploding directed network, first working version; refactored hierarchical state in LayoutEngine.(#3017)
- Refactoring of Label.propagateFonts() (#3052)
- FIX #2894: Set CircleImageBase.imageObjAlt always when options change (#3053)
- FIX #3047: Label.getFormattingValues() fix option fallback to main font for mod-fonts (#3054)
- FIX #2938: Fix handling of node id's in saveAndLoad example (#2943)
- FIX: Refactoring in Canvas.js (#3030)
- FIX #2968: Fix placement label for dot shape (#3018)
- FIX #2994: select edge with id zero (#2996)
- FIX #1847, #2436: Network: use separate refresh indicator in NodeBase, instead of width… (#2885)
- Fix #2914: Use option edges.chosen if present in global options (#2917)
- FIX #2940: Gephi consolidate double assignment of node title (#2962)
- FIX 2936: Fix check for nodes not present in EdgesHandler (#2963)
- FEAT: Reduce the time-complexity of the network initial positioning (#2759)

### Timeline / Graph2D

- FEAT: Add support for multiple class names in utils add/remove class methods (#3079)
- FEAT: Adds 'showTooltips' option to override popups displayed for items with titles (#3046)
- FIX #2818: LineGraph: Add an existingItemsMap to check if items are new or not before skipping (#3075)
- FEAT #2835: Improve timeline stack performance (#2848, #3078)
- FIX #3032: mouseup and mousedown events (#3059)
- FIX #2421: Fix click and doubleclick events on items (#2988)
- FEAT #1405, #1715, #3002: Implementation of a week scale feature (#3009)
- FIX #397: Eliminate repeatedly fired `rangechanged` events on mousewheel (#2989)
- FIX #2939: Add check for parent existence when changing group in Item.setData (#2985)
- FIX #2877: Add check for empty groupIds array and get full list from data set (#2986)
- FIX #2614: Timeline docs border overlaps (#2992)
- FIX: Doubleclick add (#2987)
- FIX #2679: Cannot read property 'hasOwnProperty' of null (#2973)
- FEAT #2863: Drag and drop custom fields (#2872)
- FEAT #2834: Control over the drop event (#2974)
- FIX #2918: Remove usages of elementsCensor (#2947)
- FEAT #2948: Rolling mode offset (#2950)
- FEAT #2805: Add callback functions to moveTo, zoomIn, zoomOut and setWindow (#2870)
- FIX: Do not corrupt class names at high zoom levels (#2909)
- FIX #2888: Fix error in class names (#2911)
- FIX #2835: Visible items bug (#2878)

### Graph3D

- FEAT: Configurable minimum and maximum sizes for dot-size graphs (#2849)


## 2017-03-19, version 4.19.1

### General

* FIX: #2685 Fixed babel dependencies (#2875)

### Timeline / Graph2D

* FIX #2809: Fix docs typo in "showNested" (#2879)
* FIX #2594: Fixes for removing and adding items to subgroups (#2821)
* FIX: Allow nested groups to be removed (#2852)


## 2017-03-18, version 4.19.0

### General

- FIX: Fix eslint problem on Travis. (#2744)
- added support for eslint (#2695)
- Trivial typo fix in how_to_help doc. (#2714)
- add link to a mentioned example (#2709)
- FEAT: use babel preset2015 for custom builds (#2678)
- FIX: use babel version compatible with webpack@1.14 (#2693)
- FEAT: run mocha tests in travis ci (#2687)
- Add note that PRs should be submitted against the `develop` branch (#2623)
- FIX: Fixes instanceof Object statements for objects from other windows and iFrames. (#2631)
- removed google-analytics from all examples (#2670)
- do not ignore test folder (#2648)
- updated dependencies and devDependencies (#2649)
- general improvements (#2652)

### Network

- FEAT: Improve the performance of the network layout engine (#2729)
- FEAT: Allow for image nodes to have a selected or broken image (#2601)

### Timeline / Graph2D

- FIX #2842: Prevent redirect to blank after drag and drop in FF (#2871)
- FIX #2810: Nested groups do not use "groupOrder" (#2817)
- FIX #2795: fix date for custom format function (#2826)
- FIX #2689: Add animation options for zoomIn/zoomOut funtions (#2830)
- FIX #2800: Removed all "Object.assign" from examples (#2829)
- FIX #2725: Background items positioning when orientation: top (#2831)
- FEAT: Added data as argument to the template function (#2802)
- FIX #2827: Update "progress bar" example to reflect values (#2828)
- FIX #2672: Item events original event (#2704)
- FIX #2696: Update serialization example to use ISOString dates (#2789)
- FIX #2790: Update examples to use ISOString format (#2791)
- FEAT: Added support to supply an end-time to bar charts to have them scale (#2760)
- FIX #1982, #1417: Modify redraw logic to treat scroll as needing restack (#2774)
- FEAT: Initial tests for timeline ItemSet (#2750)
- FIX #2720: Problems with option editable (#2743, #2796, #2806)
- FIX: Range.js "event" is undeclared (#2749)
- FEAT: added new locales for french and espanol (#2723)
- FIX: fixes timestep next issue (#2732)
- FEAT: #2647 Dynamic rolling mode option (#2705)
- FIX #2679: TypeError: Cannot read property 'hasOwnProperty' of null (#2735)
- Add initial tests for Timeline PointItem (#2716)
- FIX #778: Tooltip does not work with background items in timeline (#2703)
- FIX #2598: Flickering onUpdateTimeTooltip (#2702)
- FEAT: refactor tooltip to only use one dom-element (#2662)
- FEAT: Change setCustomTimeTitle title parameter to be a string or a function (#2611)

### Graph3D

- FEAT #2769: Graph3d tooltip styling (#2780)
- FEAT #2540: Adjusted graph3d doc for autoscaling (#2812)
- FIX #2536: 3d bar graph data array unsorted (#2803)
- FEAT: Added showX(YZ)Axis options to Graph3d (#2686)


## 2017-01-29, version 4.18.1

### General

- updated dependencies
- FIX: moved babel plugins from devDependencies to dependencies (#2629)

### Network

- FIX #2604: Handle label composition for long words (#2650)
- FIX #2640: Network manipulation styles together with Bootstrap styles (#2654)
- FIX #2494: Fix tree collision in hierarchical layout (#2625)
- FIX #2589: Vertically center label in network circle node (#2593)
- FIX #2591: Self reference edge should now appear in all cases (#2595)
- FIX #2613: Fixed return value for zoom in/out callback (#2615)
- FIX #2609: Values should be passed to check values.borderDashes (#2599)

### Timeline / Graph2D

- FIX: Fixed htmlContents example (#2651)
- FIX #2590: Min zoom bug (#2646)
- FIX #2597: Zoom while dragging (#2645)
- FIX: Minor cleanups in Timeline Range. (#2633)
- FIX #2458: Allow graph2D options to be undefined (#2634)
- FIX: Fix typo (#2622)
- FIX #2585: Fixed React example  (#2587)


## 2017-01-15, version 4.18.0

### General

- Readme improvements (#2520)
- Babel updates and fixes (#2466, #2513, #2566)
- Removed dist folder from the develop-branch (#2497)
- updated and cleaned-up npm dependencies (#2518, #2406)
- FEAT: Added CodeClimate tests (#2411)
- FEAT: Added initial Travis-CI support: https://travis-ci.org/almende/vis (#2550)
- FIX #2500: Replace { bool } with { boolean: bool } (#2501, #2506, #2581)
- FIX #2445: Fix YUI Compressor incompatibilities (#2452)
- FIX #2402: make sure a given element isn’t undefined before accessing properties (#2403)
- FIX #2560: IE11 issue 'Symbol' is undefined with babel-polyfill (#2566)
- FIX #2490: Don't pass non-string values to Date.parse (#2534)

### DataSet

- FIX: Removed event oldData items (#2535)
- FIX #2528: Fixed deleting item with id 0 (#2530)

### Network

- FIX #1911: Fix missing blur edge event (#2554)
- FIX #2478: Fix tooltip issue causing exception when node becomes cluster (#2555)
- FEAT: Change styles if element is selected (#2446)
- FEAT #2306: Add example for network onLoad animation. (#2476)
- FEAT #1845: Adding example of cursor change (#2463)
- FEAT #1603 #1628 #1936 #2298 #2384: Font styles, width and height of network nodes (#2385)
- FEAT: Add pointer position to zoom event (#2377)
- FEAT #1653 #2342: label margins for box, circle, database, icon and text nodes. (#2343)
- FEAT #2233 #2068 #1756: Edit edge without endpoint dragging, and pass label in data (#2329)

### Timeline / Graph2D

- FIX: #2522 Right button while dragging item makes items uneditable (#2582)
- FIX #2538: Major axis labels displaying wrong value (#2551)
- FEAT #2516: Added followMouse & overflowMethod to tooltip options (#2544)
- FIX: Fixed tool-tip surviving after item deleted (#2545)
- FIX #2515: Fixed hover events for HTML elements (#2539)
- FIX: Timeline.setGroups for Array (#2529)
- FIX: Error in React example when adding a ranged item (#2521)
- FEAT #226 #2421 #2429: Added mouse events for the timeline (#2473)
- FEAT #497: new stackSubgroups option (#2519, #2527)
- FEAT #338: Added HTML tool-tip support (#2498)
- FIX #2511: readded throttleRedraw option; added DEPRECATED warning (#2514)
- FEAT #2300: Added nested groups (#2416)
- FEAT #2464: Add template support for minor/major labels (#2493)
- FIX #2379: Fix initial drag (#2474)
- FIX #2102: Fix error on click for graph2D when no data is provided (#2472)
- FIX #2469: Fix graph2D render issue (#2470)
- FIX #1126: Add visibleFrameTemplate option for higher item dom content (#2437)
- FIX #2467: Fix Range ctor with optional options parameter (#2468)
- FEAT #1746: Rolling mode (#2439, #2486)
- FIX #2422: Timeline onMove callback (#2427)
- FIX #2370: IE10 drag-and-drop support (#2426)
- FIX #1906: Pass through original hammer.js events (#2420)
- FIX #2327: Add support to fixed times drag and drop (#2372)
- FIX: \_origRedraw sometimes undefined (#2399)
- FIX #2367 #2328: Group editable bug (#2368)
- FIX #2336: Mouse wheel problem on custom time element (#2366)
- FIX #2307: Timeline async initial redraw bug (#2386)
- FIX #2312: Vertical scroll bug with groups and fixed height (#2363)
- FIX #2333: Scrollbar width on browser zoom (#2344)
- Fixed #2319: Bug in TimeStep.prototype.getClassName (#2335)
- FEAT #257: Added option to change the visibility of a group (#2315)
- FEAT: More editable control of timeline items (#2305)
- FIX #2273: Cannot scroll page when zoomKey is enabled (#2301)
- FIX #2295, 2263: Issues with vertical scroll and maxHeight (#2302)
- FIX #2285: onUpdate event (#2304)
- FIX: Timeline-docs: updated group.content description to show that it can be an element (#2296)
- FIX #2251: No axis after daylight saving (#2290)
- FEAT #2256: Timeline editable can override items (#2284)
- FEAT: Graph2d performance enhancement (#2281)

### Graph3D

- FEAT #2451: Allow pass the color of points in 'dot-color' mode of Graph3D (#2489)
- FEAT: Improvement for camera 3d moving (#2340)
- FEAT: Add ability to move graph3d by left mouse button while pressing ctrl key and rotate like before (#2357)
- FIX: Fixed label disappearing bug for large axis values in graph3d (#2348)
- FIX: Fixed Grpah3D-docs: Changed "an" to "and" in graph3D docs (#2313)
- FIX #2274: Graph3d disappears when setSize is called (#2293)
- FIX: Fixed typo in index.html of Graph3D (#2286)


## 2016-11-05, version 4.17.0

### General

- Generate source-maps in develop-branch (#2246)
- Implemented #2181: Ignore the "dist" folder in the develop-branch (#2245)
- Updates DataSet and DataView remove event payload (#2189, #2264)
- Added a Gitter chat badge to README.md (#2179)
- Adds `oldData` to the update event payload in DataView (#2174)
- Prevent moment.js deprecation warning (#2089)
- Fixed #2170: Improved the contribution docs (#1991, #2158, #2178, #2183, #2213, #2218, #2219)
- Implemented #1969: generate individual css files for network and timeline (#1970)
- Cleanup bower.json (#1968)
- Fixed #2114: Removed feature-request page from website
- Distinguish better between `devDependencies` and `dependencies` (#1967)
- Typos and minor docs improvements (#1958, #2028, #2050, #2093, #2222, #2223, #2224)
- Replaced `gulp-minify-css` with `gulp-clean-css` (#1953)

### Network

- Fixed HTML in nodes example to work in Safari (#2248, #2260)
- Fixed #2100: "zoom" improvements; `clusterByConnection` bugfix (#2229)
- Implemented #2073: New example to export/import current network as JSON (#2152)
- Fixed #1718, #2122: Fix blur edge for dense networks (#2124)
- Russian, Italian, Brazilian Portuguese locale (#2111, #2184, #2188, #2052)
- Implemented #1993: edge-endpoint 'circle' (#2066)
- Implemented #972, #1920: advanced Clustering (#2055)
- Removed restriction to allow clusters of a single node. (#2013)
- Improved label positioning in ellipses (#2011)
- Fixed #1857: Fixed node positioning with improved Layout:true (#1987)
- Fixed issue with selecting edges drawn close to another (#1922)
- Fixed getPoint for same node edges (#1907)

### Timeline / Graph2D

- Fixed #2261: Bugs with mousewheel events (#2262)
- Implemented #1506: Date-Time-Tooltip while item dragging (#2247)
- Fixed background items with no groups (#2241)
- Fixed #2015: Fixes and improvements for data-serialization (#2244)
- Implemented #1881: Drag and Drop into a timeline (#2238)
- Implemented #1955: Added zoomIn and zoomOut functions (#2239)
- Implemented #2027: Auto-detect Right-To-Left orientation from DOM attributes (#2235, #2237)
- German locale (#2234)
- Option `zoomKey` added for mouse wheel support (#2197, #2216, #2217)
- Implements #2193: Horizontal scrollbar (#2201)
- Implements #272, #466, #1060: Vertical scrollbar (#2196, #2197, #2228, #2231)
- Fixed #2173: Italian locale (#2185)
- Example for react.js support (#2153, #2206, #2211)
- Allow custom label formatting via functions (#1098, #2145)
- Fix Vertical visibility for all item types (#2143)
- Fixed #2057: Right-To-Left orientation docs (#2141)
- Small bugfix to prevent null pointer exception (#2116)
- Add missing require for util module (#2109)
- Fixed #2092: Gaps between timeline items (#2107)
- Fixed #2064: Fixed position of box item (#2106)
- Implemented #773, #1367: `itemover` and `itemout` events (#2099)
- Fixed #27023: Use `requestAnimationFrame` to throttle redraws ()#2091)
- Hide vertically hidden ranged items in groups that are not visible (#2062)
- Fixed #2032: fixes BoxItem's initial width if content width is dynamic (#2035)
- Use css styles instead of delete image (#2034)
- Implemented #2014: weekday marks in other zoomlevel (#2016)
- Fixed #1625: only use `shape.radius` if available (#2005)
- Fixed incorrect documentation URL (#1998)
- Added example for zoom functions (#1986)
- Fixed #1156: Vertical scrolling when dragging (#1976)
- Minor fix in docs (#1972)
- Fixed handlebars example (#1946)
- Fixed #1723: Problems in the time axis bar if using `hiddenDates` (#1944)
- Timestep setMoment fix (#1932)
- Fixed #1853: Content overflow (#1862)
- Bugfix (#1822)
- Fix right orientation axis for Graph2D (f516cb0)

### Graph3D

- Minor improvements and major source restructuring (#2157, #2159, #2160, #2162, #2165, #2166, #2167, #2168, #2171, #2175, #2176, #2182, #2195, #2199, #2200, #2202, #2204, #2208, #2209, #2210, #2212, #2214, #2215, #2227, #2230)
- Improvements for graph3d legend support (#1940)
- Advanced Tooltips (#1884)


## 2016-04-18, version 4.16.1

### Timeline

- Fixed #1786: Timeline having zero height on Internet Explorer, regression
  introduced after fixing #1697.


## 2016-04-07, version 4.16.0

### Timeline

- Implemented rtl support. Thanks @yotamberk.
- Fixed #1697: Timeline not drawn when used within the Angular.js directive.
- Fixed #1774: Wrong initial scale when Timeline contains a single item.

### General

- Created bundles for individual visualizations: `vis-graph3d.min.js`,
  `vis-network.min.js`, and `vis-timeline-graph2d.min.js`.


## 2016-03-08, version 4.15.1

## General

- Updated all dependencies.

### Graph2d

- Fixed #1455: allow vertical panning of the web page on touch devices.
- Fixed #1692: Error when y-axis values are equal.

### Timeline

- Fixed #1455: allow vertical panning of the web page on touch devices.
- Fixed #1695: Item line and dot not correctly reckoning with the line width
  when using left or right align.
- Fixed #1697: Timeline not drawn when used within the Angular.js directive.


## 2016-02-23, version 4.15.0

### Timeline

- Implemented `currentTimeTick` event (see #1683).
- Fixed #1630: method `getItemRange` missing in docs.

### Graph2d

- Fixed #1630: method `getDataRange` was wrongly called `getItemRange` in docs.
- Fixed #1655: use parseFloat instead of Number.parseFloat, as the latter is
  not supported in IE. Thanks @ttjoseph.

### Graph3d

- Changed the built-in tooltip to show the provided `xLabel`, `yLabel`, and
  `zLabel` instead of `'x'`, `'y'`, and `'z'`. Thanks @jacklightbody.

### Network

- Implemented interpolation option for interpolation of images, default true.
- Implemented parentCentralization option for hierarchical layout.
- Fixed #1635: edges are now referring to the correct points.
- Fixed #1644, #1631: overlapping nodes in hierarchical layout should no longer occur.
- Fixed #1575: fixed selection events
- Fixed #1677: updating groups through manipulation now works as it should.
- Fixed #1672: Implemented stepped scaling for nice interpolation of images.


## 2016-02-04, version 4.14.0

### Timeline

- Fixed a regression: Timeline/Graph2d constructor throwing an exception when
  no options are provided via the constructor.

### Graph2d

- Fixed a regression: Timeline/Graph2d constructor throwing an exception when
  no options are provided via the constructor.

### Graph3d

- Fixed #1615: implemented new option `dotSizeRatio`.


## 2016-02-01, version 4.13.0

### Network

- Added options to customize the hierarchical layout without the use of physics.
- Altered edges for arrows and added the arrowStrikethrough option.
- Improved the hierarchical layout algorithm by adding a condensing method to remove whitespace.
- Fixed #1556: Network throwing an error when clicking the "Edit" button
  on the manipulation toolbar.
- Fixed #1334 (again): Network now ignores scroll when interaction:zoomView is false.
- Fixed #1588: destroy now unsubscribed from the dataset.
- Fixed #1584: Navigation buttons broken.
- Fixed #1596: correct clean up of manipulation dom elements.
- Fixed #1594: bug in hierarchical layout.
- Fixed #1597: Allow zero borders and addressed scaling artifacts.
- Fixed #1608: Fixed wrong variable reference

### Timeline

- Moved initial autoscale/fit method to an handler of the "changed" event.
- Fixed #1580: Invisible timeline/graph should not be drawn, as most inputs are invalid
- Fixed #1521: Prevent items from staying stuck to the left side of the viewport.
- Fixed #1592: Emit a "changed" event after each redraw.
- Fixed #1541: Timeline and Graph2d did not load synchronously anymore.

### Graph2d

- Major redesign of data axis/scales, with large focus on creating a sane slave axis setup
- Cleanup of linegraph's event handling.
- Fixed #1585: Allow bar groups to exclude from stacking
- Fixed #1580: Invisible timeline/graph should not be drawn, as most inputs are invalid
- Fixed #1177: Fix custom range of slaved right axis.
- Fixed #1592: Emit a "changed" event after each redraw.
- Fixed #1017: Fixed minWidth behavior for bars.
- Fixes #1557: Fix default axis formatting function.
- Fixed #1541: Timeline and Graph2d did not load synchronously anymore.
- Fixed a performance regression


## 2016-01-08, version 4.12.0

### Timeline

- Fixed #1527: error when creating/updating a Timeline without data.
- Fixed #1127: `doubleClick` event not being fired.
- Fixed #1554: wrong cursor on readonly range items.

### Network

- Fixed #1531, #1335:  border distances for arrow positioning
- Fixed findNode method. It now does not return internal objects anymore.
- Fixed #1529, clustering and declustering now respects the original settings of the edges for physics and hidden.
- Fixed #1406, control nodes are now drawn immediately without a second redraw.
- Fixed #1404, made the array returned by findNode match the docs.
- Added #1138, enable the user to define the color of the shadows for nodes and edges.
- Fixed #1528, #1278, avoided ID's being cast to string for methods that return ID's as well as storePositions casting to string.
- Fixed upscaling when the window size increases.
- Accepted pull request #1544, thanks @felixhayashi!
- Fixed documented bug in #1544.


## 2015-12-18, version 4.11.0

### Network

- Expose `setSelection` method. Thanks @zefrog.

### Timeline

- Fixed #1441: Height of subgroups not immediately updated after updating
  data in a DataSet or DataView.
- Fixed #1491: Problem using ctrl+drag in combination with using a `DataView`,
  and an issue with ctrl+drag when using `snap: null`.
- Fixed #1486: Item range sometimes wrongly calculated on IE in case of old dates.
- Fixed #1523: end of data range wrongly determined.

### Graph2d

- Large refactoring of Graph2d code base:
  - Implemented a new option for `shaded.orientation` to always shade towards zero.
  - Implemented a new option for `shaded.orientation` to follow another group (fill in between)
  - Implemented line-graph stacking
  - Fixed support for using a `DataView` in Graph2d.
  - Implemented a new zindex option for controlling svg rendering order.
  - Performance updates and fixes

### DataSet
- Fixed #1487: DataSet cannot remove an item with id `0` correctly.

### DataView
- Added the map() function from DataSet.


## 2015-11-27, version 4.10.0

### General

- Fixed #1353: Custom bundling with browserify requiring manual installation
  of `babelify`.

### Network

- Implemented new method `setSelection({nodes:[...], edges: [...]})`.
  Thanks @zefrog.
- Fixed #1343: Connected edges are now deselected too when deselecting a node.
- Fixed #1398: Support nodes start with the correct positions.
- Fixed #1324: Labels now scale again.
- Fixed #1362: Layout of hierarchicaly systems no longer overlaps NODES.
- Fixed #1414: Fixed color references for nodes and edges.
- Fixed #1408: Unclustering without release function respects fixed positions now.
- Fixed #1358: Fixed example for clustering on zoom.
- Fixed #1416: Fixed error in improvedLayout.
- Improvements on hierarchical layout.

### Timeline

- Implemented option `itemsAlwaysDraggable`, See #1395. Thanks @liuqingc.
- Implemented option `multiselectPerGroup`. Thanks @hansmaulwurf23.
- Implemented property `oldData` on change events of the DataSet, and
  deprecated the `data` property which wrongly contained new data instead of
  old data. Thanks @hansmaulwurf23.
- Implemented option `maxMinorChars` to customize the width of the grid.
- Expose `vis.timeline.Core` for customization purposes.
- Fixed #1449, #1393: text of minor grids sometimes not being drawn.

### Graph2d

- Fixed #1385: Draw lines on top of bars.
- Fixed #1461 and #1345: Reset order of SVG elements in legend icons.

### DataSet/DataView

- Performance improvements (see #1381). Thanks @phimimms.


## 2015-10-01, version 4.9.0

### Network

- Fixed bug where an edge that was not connected would crash the layout algorithms.
- Fixed bug where a box shape could not be drawn outside of the viewable area.
- Fixed bug where dragging a node that is not a control node during edit edge mode would throw an error.
- Made auto scaling on container size change pick the lowest between delta height and delta width.
- Added images with borders option (useBorderWithImage)
- Updated the manipulation css to fix offset if there is no separator.

### Timeline

- Fixed #1326: wrongly positioned dot of PointItems.
- Fixed #1249: option `hiddenDates` not accepting a single hidden date.
- Fixed a bug when pinching and using hidden dates. Thanks @lauzierj.


## 2015-09-14, version 4.8.2

### Network

- Fixed Phantom Edges during clustering.
- Fixed scaling not doing anything to edges.
- Fixed setting font to null so the network won't crash anymore.
- Fixed stabilized event not firing if layout algorithm does very well.
- Fixed arrows with some shapes when they are selected. #1292
- Fixed deletion of options by settings them to null.


## 2015-09-07, version 4.8.1

### Network

- Added German (de) locale. Thanks @Tooa.
- Fixed critical camera zoom bug #1273.
- Fixed unselectAll method. #1256
- Fixed bug that broke the network if drawn in a hidden div #1254

### Timeline

- Fixed #1215: inconsistent types of properties `start` and `end` in callback
  functions `onMove`, `onMoving`, `onAdd`.


## 2015-08-28, version 4.8.0

### Timeline

- Implemented reordering groups by dragging them vertically. Thanks @hansmaulwurf23.

### Network

- Added Spanish (es) locale. Thanks @gomezgoiri.
- Added support for labels in edges and titles for both nodes and edges during gephi import.
- Added KamadaKawai layout engine for improved initial layout.
- Added Adaptive timestep to the physics solvers for increased performance during stabilization.
- Added improvedLayout as experimental option for greatly improved stabilization times.
- Added adaptiveTimestep as experimental option for greatly improved stabilization times.
- Added support for Gephi directed edges, edge labels and titles.
- Improved the positioning and CSS of the configurator and the color picker.
- Greatly improved performance in clustering.
- Made the network keep its 'view' during a change of the size of the container.
- Fixed #1152, updating images now works.
- Fixed cleaning up of nodes.
- Fixed dynamic updating of label properties.
- Fixed bugs in clustering algorithm.
- Fixed find node return types.
- Fixed bug where stabilization iterations were counted double. If it looks like the stabilization is slower, its because it is doing twice the amount of steps it did before.
- Fixed getPositions return values.

## Graph2d

- Implemented configuration option `excludeFromLegend`. Thanks @Bernd0.


## 2015-07-27, version 4.7.0

### Timeline

- Fixed #192: Items keep their group offset while dragging items located in
  multiple groups. Thanks @Fice.
- Fixed #1118: since v4.6.0, grid of time axis was wrongly positioned on some
  scales.

### Network

- Added moveNode method.
- Added cubic Bezier curves.


## 2015-07-22, version 4.6.0

### Timeline

- Implemented #24: support for custom timezones, see configuration option `moment`.

### Graph2d

- Implemented #24: support for custom timezones, see configuration option `moment`.

### Network

- Fixed #1111, check if edges exist was not correct on update.
- Fixed #1112, network now works in firefox on unix again.
- Added #931, borderRadius in shapeProperties for the box shape.
- Added #936, useImageSize for images and circularImages

## 2015-07-20, version 4.5.1

### Network

- Fixed another clustering bug, phantom edges should be gone now.
- Fixed disabling hierarchical layout.
- Fixed delete button when using multiple selected items in manipulation system.


## 2015-07-17, version 4.5.0

### General

- Docs have been greatly improved thanks to @felixhayashi! Thanks a lot!

### Network

- Added shapeProperties, thanks @zukomgwili!
- Added configChange event.
- Properly fixed the _lockedRedraw method.
- Fixed node resizing on dragging.
- Fixed missing edges during clustering.
- Fixed missing refresh of node data when changing hierarchical layout on the fly.
- Fixed hover and blur events for edges.

### Graph3d

- Fixed not changing `backgroundColor` when not provided in options. Thanks @ozydingo.

### Timeline

- Implemented support for group templates (#996). Thanks @hansmaulwurf23.
- Implemented option `zoomKey` for both Timeline and Graph2d (see #1082).
  Thanks @hansmaulwurf23.
- Fixed #1076: Fixed possible overlap of minor labels text on the TimeAxis.
- Fixed #1001: First element of group style being cut.
- Fixed #1071: HTML contents of a group not cleared when the contents is updated.
- Fixed #1033: Moved item data not updated in DataSet when using an asynchronous
  `onMove` handler.
- Fixed #239: Do not zoom/move the window when the mouse is on the left panel
  with group labels.


## 2015-07-03, version 4.4.0

### General

- Documentation now has breadcrums. Thanks @felixhayashi!

### Graph3d

- Fixed #970: Implemented options `dataColor`, `axisColor`, and `gridColor`.

### Network

- Fixed Hammerjs direction issue.
- Fixed recursion error when node is fixed but has no position.
- Fixed accidental redrawing during stabilization.
- Fixed delete callbacks with null argument not showing toolbar afterwards.
- Added zoom events from keyboard and navigation buttons.
- No longer start stabilization with an empty node set.
- Fixed #974 connecting static smooth and straight edges.
- Improved handling of empty image field.
- Fixed #987 proper cleaning of support nodes.
- Fixed static smooth edges not fully working from every angle.
- Fixed updating bounding box of nodes without drawing.
- Fixed #1036, bug in lockedRedraw. Thanks @vges!
- Added getDataset to all manipulation functions. Thanks @ericvandever!
- Fixed #1039, icon now returns correct distance to border
- Added blurEdge and hoverEdge events.
- Added labelHighlightBold option to edges and nodes.
- Added getOptionsFromConfigurator method.
- Fixed extra edges in clustering.
- Fixed cleaning up of clustering edges on declustering.
- Made fit() method only look at visible nodes to get the range.

### Graph2d

- Made graph2d more robust against string values in the y position.
- Fixed bug where 0 axis was always in the automatically fitted range.
- Added drawPoints.onRender. Thanks @mschallar!

### Timeline

- Fixed cleaning up of items in subgroups, thanks @ChenMachluf!
- Improved error notification with groups, thanks @skinkie!


## 2015-06-16, version 4.3.0

### General

- Fixed #950: option `locales` broken in `Timeline`, `Graph2d`, and `Network`.
- Fixed #964: `Timeline`, `Graph2d`, and `Network` not working on IE9.

### Graph2d

- Fixed #942, #966: bug when data is empty.

### Timeline

- Implemented `editable` option for individual items. Thanks @danbertolini.

### Network

- Fixed dragStart event to give the correct node information.

## 2015-06-05, version 4.2.0

### General

- Fixed #893, #911: the `clickToUse` option of Network, Graph2d, and Network
  was blocking click events in the web page.

### Timeline

- Added axis orientation option `'none'`.
- Added a property `event` to the properties emitted with the `select` event (see #923).
- Improved function `fit()` to take into account the actual width of items.
- Fixed #897: Timeline option `{snap: null}` did give a validation error.
- Fixed #925: Event `timechanged` did not fire when mouse has been moved outside
  the timeline.

### Graph2D

- Fixed #892, addressed any case in validator.
- Fixed #898, lines are not taken into account for stacking.

### Network

- Improved robustness against people molesting the Function.prototype.bind()
- Fixed few functions including storePositions().
- Added beginnings of unit testing for network.
- Fixed #904, correctly parsing global font options now.
- Fixed dataView support for storePositions.
- Second click on node is no longer unselect.
- Added releaseFunction to openCluster.
- Fixed bug where the network could flicker when the pixelRatio is not integer.
- Added enabled property to physics.
- Fixed #927, dragStart event didn't contain node that was being dragged

## 2015-05-28, version 4.1.0

### Network

- Fixed #866, manipulation can now be set to false without crashing.
- Fixed #860, edit node mode now works as it should.
- Fixed #859, images now resize again when they are loaded.
- Fixed dynamic edges not correctly handling non-existent nodes.
- Accepted pull from @killerDJO for fixing selected and hover colors for edges.
- Fixed bug with right mouse button, scroll center and popup positions using the wrong coordinates.
- Fixed click to use.
- Fixed getConnectedEdges method.
- Fixed clustering bug.
- Added getNodesInCluster method.
- Renamed editNodeMode to editNode, editNodeMode now give a deprecation log message.
- Added multiselect to the docs.
- Removed deprecated dynamic entree, allow any smooth curve style for hierarchical layout.
- Fixed bug with the moveTo and getViewPosition methods.
- Fixed #861, brokenImage only working for one node if nodes have the same image.
- Fixed hoverNode and blurNode events and added them to the docs.
- Fixed #884, selectNode event.
- Fixed dynamic setting hidden and physics.
- Fixed edit node mode's fallback.

### Graph2d & Timeline

- Fixed #858, #872, fixed usage of deprecated `unsubscribe` from DataSet.
- Fixed #869: Add className with id to custom time bars
- Fixed #877: Added support for metaKey to select multiple items.


## 2015-05-22, version 4.0.0

### General

- Changed the build scripts to include a transpilation of ES6 to ES5
  (using http://babel.org), so we can use ES6 features in the vis.js code.
  When creating a custom bundle using browserify, one now needs to add a
  transform step using `babelify`, this is described in README.md.

### Timeline

- Integrated an option configurator and validator.
- Implemented option `multiselect`, which is false by default.
- Added method `setData({groups: groups, items: items})`.
- Fixed range items not being displayed smaller than 10 pixels (twice the
  padding). In order to have overflowing text, one should now apply css style
  `.vis.timeline .item.range { overflow: visible; }` instead of
  `.vis.timeline .item.range .content { overflow: visible; }`.
  See example 18_range_overflow.html.
- Fixed invalid css names for time axis grid, renamed hours class names from
  `4-8h` to `h4-h8`.
- Deprecated option `showCustomTime`. Use method `addCustomTime()` instead.
- Deprecated event `finishedRedraw` as it's redundant.
- Renamed option `animate` to `animation`, and changed it to be either a boolean
  or an object `{duration: number, easingFunction: string}`.
- Fixed #831: items losing selection when their type changed.

### Graph2d

- New option structure.
- Cleaned up docs.
- Fixed #628: stacking order.
- Fixed #624: sorting order.
- Fixed #616: stacking with negative bars.
- Fixed #728: alignment issues.
- Fixed #716: Height of graph `2px` too large when configuring a fixed height.

### Network

The network has been completely rewritten. The new modular setup using ES6 classes makes
it future proof for maintainability, extendability and clarity. A summary of new features:
- New examples, categorized by topic.
- New docs.
- New option structure, adhering to the modular setup on the backend.
- New events for user interaction.
- New render events for drawing custom elements on the canvas.
- New physics events for making a loading bar during stabilization.
- A lot of new methods that make extending easier.
- Manipulation system now works without the UI neccesarily.
- Nodes and edges can cast shadows.
- Configurator system to dynamically change almost all options.
- Validator has been created for the network's options, warning you about typo's and suggesting alternatives.
- Diamond shape for nodes.
- Unified the label code so edges and nodes have the same label settings.
- InheritColors for edges can be set to both, making a gradient fade between two node colors.
- Redesigned the clustering system giving full control over it.
- Random seed can be saved so the network will be the same every time you start it.
- New physics solver based on ForceAtlas2 as implemented in gephi.]
- New avoidOverlap option for physics.
- Many, many bugfixes.


### DataSet

- Dropped support for Google visualization DataTable.
- Dropped support for appending data returned by `DataSet.get()` to an existing
  Array or DataTable.


## 2015-04-07, version 3.12.0

### Network

- Fixed support for DataSet with custom id fields (option `fieldId`).

### Timeline

- Orientation can now be configured separately for axis and items.
- The event handlers `onMove` and `onMoving` are now invoked with all item
  properties as argument, and can be used to update all properties (like
  content, className, etc) and add new properties as well.
- Fixed #654: removed unnecessary minimum height for groups, takes the
  height of the group label as minimum height now.
- Fixed #708: detecting wrong group when page is scrolled.
- Fixed #733: background items being selected on shift+click.


## 2015-03-05, version 3.11.0

### Network

- (added gradient coloring for lines, but set for release in 4.0 due to required refactoring of options)
- Fixed bug where a network that has frozen physics would resume redrawing after setData, setOptions etc.
- Added option to bypass default groups. If more groups are specified in the nodes than there are in the groups, loop over supplied groups instead of default.
- Added two new static smooth curves modes: curveCW and curve CCW.
- Added request redraw for certain internal processes to reduce number of draw calls (performance improvements!).
- Added pull request for usage of Icons. Thanks @Dude9177!
- Allow hierarchical view to be set in setOptions.
- Fixed manipulation bar for mobile.
- Fixed #670: Bug when updating data in a DataSet, when Network is connected to the DataSet via a DataView.
- Fixed #688: Added a css class to be able to distinguish buttons "Edit node"
  and "Edit edge".

### Timeline

- Implemented orientation option `'both'`, displaying a time axis both on top
  and bottom (#665).
- Implemented creating new range items by dragging in an empty space with the
  ctrl key down.
- Implemented configuration option `order: function` to define a custom ordering
  for the items (see #538, #234).
- Implemented events `click`, `doubleClick`, and `contextMenu`.
- Implemented method `getEventProperties(event)`.
- Fixed not property initializing with a DataView for groups.
- Merged add custom timebar functionality, thanks @aytech!
- Fixed #664: end of item not restored when canceling a move event.
- Fixed #609: reduce the left/right dragarea when an item range is very small,
  so you can still move it as a whole.
- Fixed #676: misalignment of background items when using subgroups and the
  group label's height is larger than the contents.

### Graph2d

- Implemented events `click`, `doubleClick`, and `contextMenu`.
- Implemented method `getEventProperties(event)`.

### DataSet/DataView

- Implemented support for mapping field names. Thanks @spatialillusions.
- Fixed #670: DataView not passing a data property on update events (see #670)



## 2015-02-11, version 3.10.0

### Network

- Added option bindToWindow (default true) to choose whether the keyboard binds are global or to the network div.
- Improved images handling so broken images are shown on all references of images that are broken.
- Added getConnectedNodes method.
- Added fontSizeMin, fontSizeMax, fontSizeMaxVisible, scaleFontWithValue, fontDrawThreshold to Nodes.
- Added fade in of labels (on nodes) near the fontDrawThreshold.
- Added nodes option to zoomExtent to zoom in on specific set of nodes.
- Added stabilizationIterationsDone event which fires at the end of the internal stabilization run. Does not imply that the network is stabilized.
- Added freezeSimulation method.
- Added clusterByZoom option.
- Added class name 'network-tooltip' to the tooltip, allowing custom styling.
- Fixed bug when redrawing was not right on zoomed-out browsers.
- Added opacity option to edges. Opacity is only used for the unselected state.
- Fixed bug where selections from removed data elements persisted.

### Timeline

- `Timeline.redraw()` now also recalculates the size of items.
- Implemented option `snap: function` to customize snapping to nice dates
  when dragging items.
- Implemented option `timeAxis: {scale: string, step: number}` to set a
  fixed scale.
- Fixed width of range items not always being maintained when moving due to
  snapping to nice dates.
- Fixed not being able to drag items to an other group on mobile devices.
- Fixed `setWindow` not working when applying an interval larger than the
  configured `zoomMax`.

### DataSet/DataView

- Added property `length` holding the total number of items to the `DataSet`
  and `DataView`.
- Added a method `refresh()` to the `DataView`, to update filter results.
- Fixed a bug in the `DataSet` returning an empty object instead of `null` when
  no item was found when using both a filter and specifying fields.


## 2015-01-16, version 3.9.1

### General

- Fixed wrong distribution file deployed on the website and the downloadable
  zip file.

### Network

- Fixed bug where opening a cluster with smoothCurves off caused one child to go crazy.
- Fixed bug where zoomExtent does not work as expected.
- Fixed nodes color data being overridden when having a group and a dataset update query.
- Decoupled animation from physics simulation.
- Fixed scroll being blocked if zoomable is false.


## 2015-01-16, version 3.9.0

### Network

- Reverted change in image class, fixed bug #552
- Improved (not neccesarily fixed) the fontFill offset between different browsers. #365
- Fixed dashed lines on firefox on Unix systems
- Altered the Manipulation Mixin to be succesfully destroyed from memory when calling destroy();
- Improved drawing of arrowheads on smooth curves. #349
- Caught case where click originated on external DOM element and drag progressed to vis.
- Added label stroke support to Nodes, Edges & Groups as per-object or global settings. Thank you @klmdb!
- Reverted patch that made nodes return to 'default' setting if no group was assigned to fix issue #561. The correct way to 'remove' a group from a node is to assign it a different one.
- Made the node/edge selected by the popup system the same as selected by the click-to-select system. Thank you @pavlos256!
- Improved edit edge control nodes positions, altered style a little.
- Fixed issue #564 by resetting state to initial when no callback is performed in the return function.
- Added condition to Repulsion similar to BarnesHut to ensure nodes do not overlap.
- Added labelAlignment option to edges. Thanks @T-rav!
- Close active sessions in dataManipulation when calling setData().
- Fixed alignment issue with edgelabels

### Timeline

- Added byUser flag to options of the rangechange and rangechanged event.


## 2015-01-09, version 3.8.0

### General

- Updated to moment.js v2.9.0

### Network

- Fixed flipping of hierarchical network on update when using RL and DU.
- Added zoomExtentOnStabilize option to network.
- Improved destroy function, added them to the examples.
- Nodes now have bounding boxes that are used for zoomExtent.
- Made physics more stable (albeit a little slower).
- Added a check so only one 'activator' overlay is created on clickToUse.
- Made global color options for edges overrule the inheritColors.
- Improved cleaning up of the physics configuration on destroy and in options.
- Made nodes who lost their group revert back to default color.
- Changed group behaviour, groups now extend the options, not replace. This allows partial defines of color.
- Fixed bug where box shaped nodes did not use hover color.
- Fixed Locales docs.
- When