Refactoring of FluentSharp.REPL Compiler logic (to fix a couple bugs and allow easy testing).
Most of the code removed went into FluentSharp.AST
Refactored code from FluentSharp.REPL into this FluentSharp.AST files
Couple new FluentSharp.NUnit tests
New FluentSharp.REPL and FluentSharp AST UnitTests
Multiple refactorings on FluentSharp.CoreLib (namely on AppDomain ExtensionMethods)
More fixes and methods for FluentSharp.NUnit
Multiple namespace fixes