Prepare adaption of real http results
Introduce PParam as clean spearation to AST from runtime
Move classes back to core
Use Param on return as well (and some import cleanup)
Move back to core
Move some classes that are actually more part of runtime than core
Another back to core
Move last one back to core
Add some more tests
Ensure that class constants are initialized on (first) instance creation
Fix constant inheritance
Check for final methods
Fix type checking for empty (i.e. no parameter given)