Public issue https://github.com/mackron/miniaudio/pull/308

Public issue https://github.com/mackron/miniaudio/issues/290

This only works for non-streaming sounds whose data source was created
via the resource manager.

Public issue https://github.com/mackron/miniaudio/issues/291

Public issue https://github.com/mackron/miniaudio/issues/291

Public issue https://github.com/mackron/miniaudio/issues/298

Public issue https://github.com/mackron/miniaudio/issues/298

Public issue https://github.com/mackron/miniaudio/issues/297

Fix ubsan issue on macOS.

Public issue https://github.com/mackron/miniaudio/issues/295

This was not propagating the result code when retrieving the render or
capture client from an audio client.

This crash can happen if the decoder reads more data than it reports
from ma_decoder_get_length_in_pcm_frames().

This crackling was happening due to abrupt volume transitions as the
gain changes for each channel as sounds move around the world. This
change smooths out these transitions using linear interpolation.

This is happening when the engine's sample rate differs from the data
source's sample rate.