Changelog

[v0.2.3] - 2025-06-26

Generic Pydantic Models: Comprehensive support for generic models with type parameters (Container[T], KeyValueStore[K, V], etc.) with enhanced class registry that automatically handles generic type resolution and fallback to base classes
Cross-Platform DateTime: Enhanced datetime encoding with 4-digit year formatting for better cross-platform compatibility

ex_15_pydantic_subclass_polymorphism.py: Demonstrates polymorphic APIs, plugin architectures, and mixed collections with preserved subclass types
ex_16_generic_models.py: Showcases single/multiple type parameters, nested generics, and bounded generic types

Automatic Metadata Handling: Built-in encoders now automatically receive __class__ and __module__ metadata, simplifying custom encoder implementation
Generic Type Resolution: JSON decoder now handles generic class names by intelligently falling back to base classes
Timezone Support: Fixed missing timezone encoder/decoder registration for ZoneInfo objects
Simplified Encoders: Removed manual metadata from built-in encoders (datetime, date, time, timedelta, timezone)

Expanded README: Added compatibility matrix, migration guide, architecture overview, and comprehensive use cases
Enhanced API Docs: Updated encoder/decoder documentation with automatic metadata handling examples
Examples Documentation: New detailed examples with polymorphism and generic models patterns

Integration Tests: Added comprehensive test suites for generic models and subclass polymorphism
DateTime Tests: Enhanced datetime/timezone round-trip testing with edge cases and complex structures
Class Registry Tests: Improved test coverage for dynamic class scenarios

Added the last missing example & doc: using the class registry to handle dynamic classes from distributed systems and runtime generation
Fixed markdown of overview docs

Introduced ClassRegistryAbstract (ABC) for dependency injection of ClassRegistry
Added KajsonManager for better lifecycle management
Changed default Python version to 3.11 (still requires Python >=3.9)
Updated Pydantic dependency from exact version ==2.10.6 to minimum version >=2.10.6
Code cleanup and removal of unused components, most notably the sandbox_manager