- added (primitive) name mangeling to EBNFCompiler to avoid name conflicts with names used in the grammar definition

- Refactoring: AST-Transformation must now be passed as a function to full_compilation(), compileDSL etc. This allows more flexibility in doing
custom validation of the syntax tree before, after or while AST transformation.

- added `start_parser` parameter to `GrammarBase.parse` in order to allow fine grained testing of ENBF syntax descriptions;
- added `dsl.suite_outdated`
- further corrections

- potential infinite loops are now caught when running parser and an error is reported; bug fixes, tests