Dropped the EventNonRecorder class, Made EventRecorder more flexible. Choice tests now test fireEvent invocations too.
Changed GroupWalker so that it would return error messages as early as possible. Added a test to check this.
Version bump to test version number.
Added a TODO item.
Don't require the mangalam version of semver-sync.
Merge pull request #11 from keisetsu/develop

Merged.
Added some missing documentation. Modest code cleanup in some places.
Version bump for release.
Merge branch 'release/0.14.1' into develop
Merge pull request #2 from mangalam-research/develop

Update to 0.14.1