Merge branch 'release/2.2.0' into develop
Change Reasons to subclass from Event instead of RayoNode's
Merge pull request #208 from JustinAiken/feature/reasons_are_events

Change Reasons to subclass from Event instead of RayoNode's
[UPDATE] Bump to 2.2.1
[DOC] Tidy up changelog
Merge branch 'release/2.2.1'
Merge branch 'release/2.2.1' into develop
[BUGFIX] Delay sending Answered event on call until AsyncAGI is invoked

Fixes https://github.com/adhearsion/adhearsion/pull/427
[DOC] Changelog entry
[UPDATE] Bump to 2.2.2
Merge branch 'release/2.2.2'