- `SoundInstance.Play` no longer takes a loop parameter
- `SoundInstance.Stop` is split into `Stop` and `StopImmediate` instead of taking an immediate parameter
- Added `StreamingSoundSeekable` to better support streaming audio that does not support seek
- `StreamingSound` no longer has a Loop property, but `StreamingSoundSeekable` does
- abstract `StreamingSound.AddBuffer` renamed to `FillBuffer`
- `FillBuffer` is now provided with a native buffer to avoid an extra data copy
- `StreamingSound` buffer implementation optimized to avoid repeated alloc/frees
- added `Video` class which can load and play Theora (.ogv) streaming video/audio
Reviewed-on: #20
cosmonaut