2.2

Changes:

• 🐛 Fix: Python literals as default arg rendered as ... (#147)
• ✨ Add --print-safe-value-reprs=REGEX CLI option to override the print-safe flag
  of Value (for custom default value representations provided via pybind11::arg_v()) (#147)
• ✨ Add --enum-class-locations=REGEX:LOC CLI option to rewrite enum values as valid
  Python expressions with correct imports. (#147)

⚠️ This release detects more invalid expressions in bindings code. Previously, Enum-like representations (e.g., <MyEnum.Zero: 0>) were always treated as non-printable values and were rendered as .... The invalid expressions should be acknowledged by --enum-class-locations or --ignore-invalid-expressions.