Added QueMaster class and tests
added NoteEvent class and added more tests to QueMaster
Merge branch 'lijuan' of https://github.com/javiersuweijie/ABC-player
added more variables and voice handling
Merge branch 'swayam' of https://github.com/javiersuweijie/ABC-player into javier
Added support for REST, CHORD, SIMPLE REPEAT, and VOICE
refactored some of the QueMaster tests
Merged with swayam's branch
almost done with Quemaster
fixed merged conflict
Merge branch 'javier'