luxon/changelog.md

Immutable date wrapper

# Changelog

## 1.3.0

 * **mildly breaking change** Duration.toFormat now floors its outputs instead of rounding them (see #224)
 * Added 'floor' option to Duration.toFormat and deprecated the 'round' option
 * Added `Dateime.toBSON`
 * Fixed infinite loop when passing invalid or zero-length durations to Interval#splitBy
 * Added better error handling to Duration.fromObject()

## 1.2.1

 * 222x speed-up in DateTime creation for non-en locales
 * Added `DateTime#toMillis` alias for `DateTime#valueOf`
 * Fixed types on zone exports

## 1.2.0

 * Export Zone classes
 * Fix `endOf` and `startOf` for quarters
 * Change `toFormat("Z")` to return a number for UTC
 * Allow "GTM" as an argument to `setZone`

## 1.1.0

 * Support for zone names with more than two components
 * Fixed long-term-accurate conversions for months
 * Added `weeksInWeekYear`

## 1.0.0
 * The big one-oh. No changes from 0.5.8.

## 0.5.8
 *  Large perf improvements for `DateTime#toFormat()`, when using non-intl numbers

## 0.5.7

 * Added AMD build to the NPM package
 * Large performance improvements to technical formatting (e.g. `DateTime#toISO`)

## 0.5.6

 * Refactor internals
 * Added support for fractional seconds in `Duration.fromISO`
 * Added browser global to the NPM package

## 0.5.5

 * Best-we-can-do fix for `DateTime#toLocaleString()` for fixed-offset zones when showing the zone name in the output
 * Fixed `Duration#shiftTo` for unormalized Durations that need a rollup cascade

## 0.5.4

 * Fix default locales in Node
 * Fix prototype to help with React inspection
 * Improve REPL output for Durations in Node

## 0.5.3
 * Remove errant ICU runtime dep (again)

## 0.5.2
 * Remove comments from minified builds (introduced by 0.5.1)

## 0.5.1
 * Fixed minified builds (oops)
 * Fix computation of fractional parts of diffs

## 0.5.0

 * `isBefore()` returns true for the end of the interval, consistent with being half-open
 * `zoneName` now rturns `null` for invalid DateTimes
 * Added quarter support
 * Adding a month to Jan 31 gives Feb 28/29

## 0.4.0

 * Always round down to the nearest millisecond when parsing

## 0.3.1

 * Fixed `toLocaleString` for fixed-offset zones in the absence of Intl
 * Added `Info.isValidIANAZone`
 * Made malformed zone specifiers result in invalid DateTime instances

## 0.3.0

 * Rename DateTime.fromString to DateTime.fromFormat (leaving deprecated DateTime.fromString)
 * Rename DateTime.fromStringExplain to DateTime.fromFormatExplain (leaving deprecated DateTime.fromStringExplain)
 * Support Etc/GMT IANA zones
 * Perf fixes for zones
 * Rework build infrastructure

## 0.2.12

 * Fix DateTime.fromObject's handling of default zones
 * Change `keepCalendarTime` to `keepLocalTime`

## 0.2.11

 * Handle no arguments in `DateTime.min` and `DateTime.max`
 * Documentation fixes

## 0.2.10

 * Fix bug where Durations could sometimes mutate

## 0.2.9

 * Fix `DateTime.fromMillis(0)` more thoroughly

## 0.2.8

 * Fix sourcemaps

## 0.2.7

 * Fix `DateTime.fromMillis(0)`

## 0.2.6

 * Fix 'h' and 'hh' `toFormat` tokens for midnight

## 0.2.5

 * Better `shiftTo` behavior for durations with floating point components

## 0.2.4

 * Fix `toHTTP` to use 24-hour hours
 * Tighten up regular expressions
 * Various documentation fixes

## 0.2.3

 * Fixes for `diff` with multiple units

## 0.2.2

 * Fixes for `fromSQL`, `toSQL`, `toSQLTime`, and `toSQLDate`
 * Add `includeOffset` option to `toISO` and `toISOTime`

## 0.2.1

 * Add `module` field to package.json

## 0.2.0

 * Remove polyfills from main builds
 * Update compilation toolchain to target builds more exactly
 * Fix IE in polyfill build

## 0.1.0

 * Add `.fromSQL`, `#toSQL`, `#toSQLTime`, `#toSQLDate`
 * Fix AM/PM parsing
 * Major perf improvements
 * Default to system locale when using macro formats in `#toFormat`
 * `.fromISO` accepts standalone times
 * See https://github.com/moment/luxon/issues/93 for important news concerning field accessibility

## 0.0.22

 * Add 'u' formatting and parsing
 * Add 'y', 'yyyyy', and 'yyyyyy' parsing tokens
 * Add 'yyyyyy' formatting token
 * Better error messages for missing arguments to `DateTime.fromString`

## 0.0.21
 * Fix zones for Edge

## 0.0.20
 * Fix `fromISO` to accept various levels of subsecond precision

## 0.0.19
 * Fixed parsing for ordinals
 * Made parsing stricter

## 0.0.18
 * Fixed formatting for non-hour aligned fixed-offset zones
 * Fixed longterm conversion accuracy option in diffs
 * Fixed invalid handling in `Interval#set`

## 0.0.17
 * Fixing formatting for fixed-offset zones

## 0.0.16
 * Fixes for IE 9 & 10

## 0.0.15
 * Fixing busted release 0.0.14

## 0.0.13

 * toLocaleString() and others default to the system's locale
 * support for ISO week durations in `Duration.fromISO`

## 0.0.12

 * Improve non-Intl fallbacks for toLocaleString
 * Fix `offsetNameShort` and `offsetNameLong` for non-Intl environments
 * Added `weekdayShort`, `weekdayLong`, `monthShort`, `monthLong` DateTime getters

## 0.0.10

 * Only include build dir in NPM module

## 0.0.9

 * Move to Moment Github org

## 0.0.8

 * The local zone can now report its IANA name
 * Fixed parsing bug for `yy` and `kk`
 * Improved test coverage

## 0.0.7

 * Added `toLocaleParts`
 * Slightly more friendly month/weekday parsing
 * Default locale setting

## 0.0.6

 * Stricter `toJSDate`
 * `fromISO` now supports `year` and `year-month` formats
 * More graceful degradation in the absence of platform features

## 0.0.5

Experimental, but now broadly useful.