Added tester to master
added functionality to Not and Neg operators
Merge branch 'master' of https://github.com/peterxu422/PLTCompiler
fixed test color bug
Merge branch 'master' of github.com:peterxu422/PLTCompiler
fixed operator tests
added length() for arrays
finished length() for arrays. updated test
Merge branch 'soundTypes' of github.com:peterxu422/PLTCompiler into soundTypes
pitches are now more than just strings