Handle comments in preprocessor
Improve matchOverride when parsing beats per bar

I'm not sure if this is right yet...
Fix clPatternSet regexp: Only dot can separate IDs, not any char
Fix clPatternSet regexp: Allow omitting phrase or parm ID

e.g., "key..parm" applies to phrase == \main
Fix some regexp macros and add a couple
Add start/stop command: /name/name/name+(optional quant)
Some progress on composite patterns... can parse () groupings
Grouping operators: This almost certainly needs refactoring
Parsing composite patterns is working, so many hacks