start work on pattern rotation
Non working checkpoint
Some refactoring of mod code to avoid bad pointers
Hook in pattern rotate further. Do calc to fix step index while playing is turned on. Need to still differentiate between active pattern and played pattern for rotation as well as pattern length
Change set track length to operate on edited track rather than playing track
Changes on front to support changing and displaying pattern rotation
Final fixes for pattern rotate
Merge branch 'pattern-stuff'
Final build with merge to masteR