Merge remote-tracking branch 'origin/nigel'
Merge pull request #42 from Winston-Chan/nathan

Simplifications (no longer compiles, just wait!)
Reset the test cases

Also moved all test cases into one folder
Merge branch 'master' of https://github.com/Winston-Chan/CPSC449
Merge pull request #43 from Winston-Chan/nathan

Added isValidTuple
Renamed things