Fixed .src for class attributes and setters with fat arrows (#1066)
Extended top level tests with more cases now setters can have fat arrows (#1066)
Moved code to generate getter and setter code blocks to AbstractTransformer (#1066)
Calling Decl.isVariable() on an attribute will now return false when it has a setter (because it isn't really a simple variable field/local) (#1066)
Make sure that class setters get their code blocks properly generated (#1066)