[BUGFIX] Do not keep call actors around after they've sent an end event
[BUGFIX] Execute FreeSWITCH call components synchronously

Celluloid's task suspension will take care of ensuring the call actor is not blocked
[BUGFIX] Trim FreeSWITCH Output complete handling overhead

This doesn't need to go back out to the mailbox as it's entirely contained within the actor anyway
Merge branch 'release/1.9.1' into develop
[BUGFIX] The AMI connection isn't over until the fat actor terminates
[CS] Only listen for EventSocket events we care about

Should cut down event volume a lot
[DOC] Changelog entries
Merge branch 'feature/fs_perf_tweak' into develop

Conflicts:
	CHANGELOG.md
	punchblock.gemspec
[UPDATE] Bump to 1.9.2
Merge branch 'release/1.9.2'
Merge branch 'release/1.9.2'