* Fixed https://github.com/google/gson/issues/1310
Also renamed VersionUtils to more readable abstraction JavaVersion
Added support for debian naming convention
Using min supported version (6) as the default if JDK version can't be figured out
* Moved JavaVersion to an internal package
The most notable impact of this change is that it adds several new public APIs:
- The TypeAdapter abstract class
- The TypeAdapter.Factory interface
- Four new methods on GsonBuilder to register streaming TypeAdapters (via Factory, via Class, via TypeToken, and as a type hierarchy)
- Three new methods on Gson to lookup streaming TypeAdapters (by type, by class, and to get the next type adapter)
Still outstanding:
- Write beautiful prose to document the new APIs above
- Change GsonBuilder's precedence so that both old and new-style type adapters are registered in one lot