* Add `MA_SOUND_FLAG_LOOPING` and `MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING` flags. These can be used to initialize sounds and resource managed data sources to loop by default. This is the recommended way to enable looping for streams. The `isLooping` config option in `ma_sound_config` and `ma_resource_manager_data_source_config` has been deprecated. If you are using those, you should switch to the new flag or else you'll get compiler errors when upgrading to a future version.
*`ma_rb_commit_read()`, `ma_rb_commit_write()`, `ma_pcm_rb_commit_read()` and `ma_pcm_rb_commit_write()` no longer return `MA_AT_END`. The reason for this change is that there's no real notion of an "end" in a ring buffer which makes this result code confusing. In addition, it's possible for these functions to return something other than `MA_SUCCESS` when the operation completed successfully which adds to the confusion. The correct way to check if there is any more room in the ring buffer is to look at the frame count returned by `*rb_acquire_read/write()`.
* The `ma_pcm_rb` data source implementation has been modified to pad output data with silence if there is not enough data in the ring buffer to fill the request. What this means is `ma_data_source_read_pcm_frames()` should no longer return a frame count of less than what you requested, and will therefore never return `MA_AT_END` which does not make sense for a ring buffer since it does not have the notion of an end.
* The `ma_pcm_rb` data source implementation has been modified to pad output data with silence if there is not enough data in the ring buffer to fill the request. What this means is for an `ma_pcm_rb`, `ma_data_source_read_pcm_frames()` should no longer return a frame count of less than what you requested, and will therefore never return `MA_AT_END` which does not make sense for a ring buffer since it does not have the notion of an end. This change should make it much easier to use a ring buffer as the data source for a `ma_sound`.
* Fix a bug relating to node detachment.
* Fix a bug where amplification with `ma_device_set_master_volume()` does not work.
* Fix a bug where sounds loaded with `MA_SOUND_FLAG_DECODE` do not loop.
