Observable API and listeners fixups#593

Merged

oberstet merged 2 commits intocrossbario:masterfrom meejah:listener-observable-api-fixup

Feb 7, 2016

+174-29

Commits on Feb 5, 2016

Fire "listener" events properly in protocol
meejah
committed

Commits on Feb 6, 2016

Clean up Observable and make it play nicely with super().
meejah
committed