Fix icode test cases
Auto-translate cgen test cases
Translate native builtins to new syntax
Fix cgen test cases
Enable native back end again
Fix cgen test case runner
Fix transform test case
Fix transform test case
Comment and docstring updates
Remove references to interfaces
Remove references to interfaces
Update docstring to use new syntax
Remove is_interface attributes
Minor code cleanup
Update docstrings to use new syntax
Convert docstrings and comments to use new syntax
Convert docstrings and comments to use new syntax