* Grammar updates
- Make class parameters required
* Add ClassLink; wip with `super()` calls in ctors
* More AST nodes as ScopableNames
- (function call) Argument
- FunctionParameterDeclaration
* Add support for ambiguity handling
* Add few more tests
* Handle returns in constructors
- Semantic analysis to error on returning a value
- Introduce specific emitter method for returning from constructor
- Various tests
* Refactor super building to pre-semantic analysis
* Adding several tests, some are TODO
- found an issue with function resolver and funcrefs, fix later
* Address self-review comments
* Fix funcref global func references, tests
