Steppor 0.64 Renoise Workshop Release

Wrapped up the fixes I made for this event.

The main focus was on bug-fixes and adding colors for grouping.

Here is the Changelog

Selecting a track where there is no instrument yet for, it results in an exception bug
Groups mess up the instrument row and pattern matrix sync bug
Instrument Row is not updated quick enough enhancement
remove print-lines bug
fix play and record button bug
Pattern Matrix and track groups enhancement
Pattern mix add Instrument in later stage bug enhancement tech-enhancement
dodgy usb cable generates lockup bug
Some kind of Pattern Matrix control enhancement