- Update to 0.5.13:
* [Bug] Fixed various undefined behaviour found with ubsan.
* IMF: Change envelope interpretation to be more like in XM instead of
IT and tighten header validation.
* MED: Some samples had a ping-pong loop when there should be no loop at all.
* MT2: Ignore incorrect drums chunk size in early MT2 files (fixes e.g.
“A little Rock” by Csumi).
* MT2: Work around initial master volume of 0 used in some files that apply
a fade-in a the song start using track automation that would stay silent
forever otherwise (track automation is currently not supported).
* OKT: Apply portamento on every tick.
* mpg123: Update to v1.29.2 (2021-10-23).