add support for entity filtering on alarm changelog list
Merge remote-tracking branch 'origin/master' into add_entity_filtering_on_alarm_changelog

Conflicts:
	rackspace_monitoring/drivers/rackspace.py
version bump
Revert "version bump"

This reverts commit a47dc9a45c0f24e451384beefbe2c7086fbe6aa3.
Merge pull request #13 from racker/add_entity_filtering_on_alarm_changelog

add support for entity filtering on alarm changelog list