v0.0.21 - Various Improvements

Hello!

It is time for another update.

New stuff:

• Possible to control the velocity of a note by the position of mouse clicks on the button in the piano control. Enable it in the "Piano" settings "Velocity From Mouse Click Position"
• Improved rendering of the tracker formats (PICO-8, TIC 80 and FamiTracker) when multiple notes are played at the same time with the same rythm type. This happens with block chords and strums etc.
• Improved some of the components for editing synthesizer settings by adding sliders when this makes sense
• Minor additions to the documentation

Bye!