ToDo
===================
1. Remove Namespace and Class analyses before posting to college server

Done
===================
1. treat underscore '_' as a letter
2. factor into:
   - TestExec
   - Toker
   - TokenContext
   - TokenState
   - DerivedStates
   - TokenSource
3. Add SemiExp
4. Fails on TestCase_EligibleCheck.cs
   - problem was @"..." format for C# strings
   - new fixed