Uploading 0.7.11. I don't expect this to fix any issues. I'm mostly interested to see if it breaks anything

The changes

• Bugfix: Attempting to improve the behavior of calls by reducing potential RTComm errors
• Bugfix: Issues with weird unexpected disconnect issues
• Bugfix: I guess I made a mistake in registering for system signals, whoops
• Bugfix: Following more closely the Telepathy spec by doing connects and disconnects asynchronously