Add FrameBuffer#bind/unbind
Make FrameBuffer#unbind() static
Added ByteArray.

#changes
#closes 1245
Merge pull request #1243 from xoppa/master

Add FrameBuffer#bind/unbind
Make VertexAttributes implement Iterable
Make inner classes private
Merge pull request #1249 from xoppa/master

Make VertexAttributes implement Iterable
Merge remote-tracking branch 'upstream/master'