access angular dependency injection within event handlers #416
Analytics providers to be designated as async, which means their first handler will be based a callback function.
Calls to eventTrack now return a promise that for each provider. Resolves immediately if the provider is not asynchronous. Waits for the callback if the provider is asynchronous
Removed piwik from source and docs. Added link to angulartics-piwik
Add support for UI Router 1.0 which will use transition hooks #455