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- Improve --asm option: disambiguate code objects with the same co_name
- Update canonic versions 3.6.3, 3.5.4, etc.
- "std" API now uses get_opcode_module rather than get_opcode()
- Add function extended_arg_val and use it in unpack_opargs_bytecode()
- str2version(): canonicalize version before float
- str2float(): We now at least detect inter-python version magic changes and
can return something like 3.54 for 3.5.4 This assumes there never will be a 3.51