v4.0.0

Full Changelog: v3.1.4...v4.0.0

Summary

• annotation-first model fields are now the preferred API
• declared fields support both attribute access and mapping access
• standalone Field(...) validation remains supported
• undeclared public attributes now follow strict
• minimum supported Python version is now 3.12

Notes

• Model now uses a MutableMapping runtime instead of subclassing dict
• runtime support for annotated Field(...) model declarations is complete
• static type checker support for name: str = Field(...) is still limited and may require cast(Any, Field(...)) depending on the checker