discard dummy program changes

[pimzand]

Awesome code. Does almost exactly what I want. Compiles and runs without issue using dotnet on Fedora 38.

MIDIProgramSplitter is clever enough to not split a track after a program change when there are no notes between the current and previous program change. Just one request here: could the first program change be discarded?

Why?
Many midi players will name the track after the first program change they see.
Ableton will discard any program change in a track other than the first.