- Added method sendSync to YowsupConnectionManager
- Added method parseSync to ReaderThread
Interfaces/Interface.py:
- Added signal "sync_gotSyncResult" to SignalInterface
- Added method "sync_sendSync" to MethodInterface

connectionmanager.py:
- Registered the new sendSync method to "sync_sendSync"
- Updated ReaderThread.parseSync to use the new signal "sync_gotSyncResult"
Merge pull request #338 from mellesies/sendSync

Fix for syncing contacts