release(app): 1.6.1 build

Merge branch 'master' of github.com:jakezatecky/react-checkbox-tree

Release v1.6.0-alpha.1

Should fix stupid npm issue where prelease was incorrectly marked at `latest`.

Release v1.6.0-alpha.0

Release v1.5.1

Should fix stupid npm `latest` tag conflict with the alpha prerelease.

Release v1.5.0

Release v1.4.1

Release v1.4.0

Release v1.3.1

Update dist again for v1.3.0