Version 2.3.0

Version 2.3.0-rc.1

Update version for v2.2.2 release

Prep for a v2.2.1 release

Version bump for v2.2.0

Merge pull request chartjs#2947 from chartjs/fix/524

Add polar area start angle setting

Fix missing Chart.js.zip file for Travis release

V2.1.6 with tooltip array fix

Merge pull request chartjs#2760 from chartjs/2.1.5_release

Bump version to 2.1.5 and build

2.1.4 release