Commented Feature: Update : [code/unity] Migrate application design to use Unity for IoC [1691]

Implement Unity and Dependency injection to enable the development of Unit Tests as Tweetinvi currently only have Integration tests.
Comments: Associated with changeset 34471: Version 0.9.0.0
- Integration of the ExceptionHandler in Streams
- Added the management of Warning in UserStream

Version 0.8.3.23
- Resolved issue for warning informing that number of followers exceed 10.000