Wrote abc files for pieces one, two, and three.
Design document upload
Working on Lexer Rules
Wrote SequencePlayerTest
Revisions on initial work
Spec out ADT
Implement Note, Voice and Lyric.  Write VERY basic tests
Revert "Merge branch 'implement_ADT'"

This reverts commit 93c0992ab0345dcf117f949887845ed390b7a2b0, reversing
changes made to 5e4e4a3bf026d7de6371b98ade2bd7e07ee88342.
Revert "Merge branch 'SequencePlayerTest' of github.com:Jdhaimson/abcmusicplayer"

This reverts commit 5e4e4a3bf026d7de6371b98ade2bd7e07ee88342, reversing
changes made to 88671f89b634a0be8e5d6fd8c4da87cd2a88f59b.
Revert "Merge branch 'LexerRules' of github.com:Jdhaimson/abcmusicplayer"

This reverts commit 88671f89b634a0be8e5d6fd8c4da87cd2a88f59b, reversing
changes made to afd431a78dd82759d7d890f735a45825485a6d20.
Fix merging issues
Merge branch 'SequencePlayerTest'
Fix merge conflict