- Update to 0.6.9
* [Bug] An exception could be thrown during rendering when trying
to access the release node of an empty envelope.
* The fix for the OPL cutoff bug introduced in libopenmpt 0.6.7
was incomplete.
* ULT: Offset commands exceeding 65535 samples were sometimes not
imported correctly even if there was room for them.
* After seeking with seek.sync_samples=1, the filter settings of
playing notes were not updated since libopenmpt 0.6.7.
* Loading of and seeking inside (malformed) modules with
thousands of short sub-songs has been sped up.