message: Add changelog entry for v2.1.0
diff: @@ -8,6 +8,20 @@ This change log follows the format documented in [Keep a CHANGELOG].
  [semantic versioning]: http://semver.org/
  [keep a changelog]: http://keepachangelog.com/
  +## [2.1.0] - 2019-09-06
  +
  +Thanks to date-fns contributors: [@ManadayM](https://github.com/ManadayM), [@illuminist](https://github.com/illuminist), [@visualfanatic](https://github.com/visualfanatic), [@vsaarinen](https://github.com/vsaarinen) and at least but not least [@leshakoss](https://github.com/leshakoss)!
  +
  +### Fixed
  +
  +- [Set start of the week to the Sunday for Thai locale](https://github.com/date-fns/date-fns/pull/1402).
  +- [Fixed month matching in Polish locale](https://github.com/date-fns/date-fns/pull/1404).
  +- [Fixed `eachWeekendOfInterval` skipping the first date in the supplied interval](https://github.com/date-fns/date-fns/pull/1407).
  +
  +### Added
  +
  +- [Added Gujarati locale](https://github.com/date-fns/date-fns/pull/1400).
  +
  ## [2.0.1] - 2019-08-23
  ### Fixed
  