This version adds some bugfixes and new features.
- Support tcp transport addresses (#57)
- Add support for the annonymous authentication protocol (#32)
- Add flags kwarg to aio high level client method call (#55)
- Allow subclassing of DBusError (#42)
- Fix exception in aio message handler loop on task cancellation (ff165aa)
- Improve error messages (#46, #59)
- Fix match rule memory leak bug (508edf8)
- Don't add match rules for high level client by default (615218f)
- Add empty properties interface to standard interfaces (#49)