message: minor: updated previous release
diff: @@ -17,12 +17,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  ## [3.1.0] - 2020-01-21
  ### Added
  -- Added `valAxisDispUnits` [\#606](https://github.com/gitbrent/PptxGenJS/pull/606) ([AmrutPatil](https://github.com/AmrutPatil))
  +- Added `valAxisDisplayUnit` [\#606](https://github.com/gitbrent/PptxGenJS/pull/606) ([AmrutPatil](https://github.com/AmrutPatil))
  - Added `dataTableFontSize` chart option [\#622](https://github.com/gitbrent/PptxGenJS/pull/622) ([MehdiAroui](https://github.com/MehdiAroui))
  -- Added text glow option [\#630](https://github.com/gitbrent/PptxGenJS/pull/630) ([kevinresol](https://github.com/kevinresol))
  -- Ability to rotate image [\#639](https://github.com/gitbrent/PptxGenJS/pull/639) ([alabaki](https://github.com/alabaki))
  +- Added text `glow` option [\#630](https://github.com/gitbrent/PptxGenJS/pull/630) ([kevinresol](https://github.com/kevinresol))
  +- Ability to `rotate` image [\#639](https://github.com/gitbrent/PptxGenJS/pull/639) ([alabaki](https://github.com/alabaki))
  - Include types in package.json files [\#641](https://github.com/gitbrent/PptxGenJS/pull/641) ([cronin4392](https://github.com/cronin4392))
  -- Added new chart option `showLeaderLines` [\#642](https://github.com/gitbrent/PptxGenJS/pull/642) ([cronin4392](https://github.com/cronin4392))
  +- Added `showLeaderLines` chart option [\#642](https://github.com/gitbrent/PptxGenJS/pull/642) ([cronin4392](https://github.com/cronin4392))
  ### Changed
  - Fixed: Empty color negative values on barchart [\#285](https://github.com/gitbrent/PptxGenJS/issue/285) ([andrei-cs](https://github.com/andrei-cs)) ([Slidemagic](https://github.com/Slidemagic))
  - Fixed: Add missing margin type from ITextOpts [\#643](https://github.com/gitbrent/PptxGenJS/pull/643) ([cronin4392](https://github.com/cronin4392))
  