Large pep8 cleanup of many modules, some minor bug fixes
Fix double timedelta
Revert logging cli changes, not workink
Large code reorganization with soundforest and musa tools:

- Moved many modules from musa to soundforest
- Changed dependencies between the modules, now soundforest is
  independent and musa requires it (used to be other way around!)

  Bugs may have happened because of the merge. Sorry about that.
Use correct new exception name
Syntax fixes to CLI commands
Cosmetic fixes
Added option to convert one file to given path
Changed to use new subcommands API from soundforest