message: Add CHANGELOG.md entry for v1.28.4
diff: @@ -10,10 +10,17 @@ This change log follows the format documented in [Keep a CHANGELOG].
  ## [Unreleased]
  +## [1.28.4] - 2017-04-26
  +
  ### Fixed
  - Fix accents on weekdays in the Italian locale.
  - See PR [#481](https://github.com/date-fns/date-fns/pull/481)
  + See PR [#481](https://github.com/date-fns/date-fns/pull/481).
  + Thanks to [@albertorestifo](https://github.com/albertorestifo)
  +
  +- Fix typo in `ddd` format token in Spanish language locale.
  + Kudos to [@fjaguero](https://github.com/fjaguero).
  + See PR [#482](https://github.com/date-fns/date-fns/pull/482)
  ## [1.28.3] - 2017-04-14
  @@ -981,7 +988,8 @@ This change log follows the format documented in [Keep a CHANGELOG].
  - `startOfDay`
  -[Unreleased]: https://github.com/date-fns/date-fns/compare/v1.28.3...HEAD
  +[Unreleased]: https://github.com/date-fns/date-fns/compare/v1.28.4...HEAD
  +[1.28.4]: https://github.com/date-fns/date-fns/compare/v1.28.3...v1.28.4
  [1.28.3]: https://github.com/date-fns/date-fns/compare/v1.28.2...v1.28.3
  [1.28.2]: https://github.com/date-fns/date-fns/compare/v1.28.1...v1.28.2
  [1.28.1]: https://github.com/date-fns/date-fns/compare/v1.28.0...v1.28.1
  