Possibilities include:
- Implementing PEPs
- PEP 328 absolute/relative import
- PEP 341 unifying try/except and try/finally
- PEP 343 implementation ('with:')
- PEP 308 implementation ('x if y else z')
- AST work
- export AST to Python
- Basic pychecker functionality
- rewrite peepholer to use AST instead of modifying bytecode directly (where applicable)
- rewrite ast.c and compile.c to use arena memory management to cut out memory leaks
- export AST to Python