Fixes #234

Related to #233.

resetStaticState was removed here:
https://github.com/robolectric/robolectric/pull/1364

Fixes #225.

This reverts commit deef4ae2.
Fixes #231.
Reopens #225.

Depending on the order tests are run in, this
seems to be able to cause errors.

Fewer static imports, better wrangling of generics
(particularly when asserting contains), and, least
of all, better internal support. 

Fixes #225.

Fixes #224

Fixes #222

Also does some cleanup, including switching to use
a builder and re-naming a few classes.

Otherwise it's likely our new Bitmaps will be 
immediately evicted.

Hack for #219

Fixes #171.

Fixes #217.

Fixes #216.

This does not make GifDecoder thread safe in that
it doesn't guarantee that a decoder will decode
a particular frame, but should keep state
consistent and prevent crashes from concurrent
writes to buffers.

Fixes #212.

Progress toward #212.

Fixes #214

Fixes #145.