- fix: composing status from slave is now being properly reported
https://github.com/openpeer/op/issues/134
- added delivery state "sent"; core doesn't use but place holder for higher layers.
https://github.com/openpeer/op/issues/136
Merge branch 'feature-20140730-is-composing' into 20140401-dev-stable

Conflicts:
	libs/op-core-cpp