* BUG: Operator `not` hidden by `ID` in ScriptLanguage.g4
* BUG: Evaluator evaluation of binary
* BUG: TransformAst.java copy paste, BooleanLiteral for TRUE
* IMPROVE: Facade new method for creating parser
* BUG: Value equals/hashcode, wrong type for STRING
* IMPROVE: add test cases for Evaluator.java