v1.1.3

v1.1.3 brings lots of bug fixes and improves stability.

• All old style binding functions are deprecated or removed. Now the only two are vm->bind and vm->bind_property.
• Add box2d as builtin modules.
• Unit test coverage: 78% -> 85%.

Changes

1. change std::is_pod to pkpy::is_pod which is compatible with C++20.
2. add colorsys module.
3. from xx import * will read __all__ variable if possible.
4. open default mode is 'r'
5. reimpl round in cpp
6. fix a bug of mat3x3.__rmul__
7. gcnew constructs PyObject inplace, no std::move any more!
8. fix: dict and mappingproxy, they cannot be hashed anymore!
9. fix #126

Break changes

1. remove vm->property. Use vm->bind_property instead.
2. change PrintFunc signature to C-style (*)(VM*, const char*, int)