- Added json_mixin.AbstractDataPersistence, an abstract class for making data objects that can save their state to a file.
- Renamed JsonMixin.json_content to just .json.
- Added the initial WSGI modules to titan/wsgi.
- Added middleware for activities, and added automatic latency logging via LatencyMiddleware in Titan Stats.
- Changes some auth handling in titan_rpc.
- Made utils.validate_namespace less strict.