0.7.0

Changelog

Improve typing coverage with ParamSpec + Protocol (#27)

Type checkers now see cache_info() and cache_clear() on decorated functions, while preserving the original call signature:

• Added CachedCallable[P, R] protocol using ParamSpec — decorated functions retain their arg/return types
• Added BaseCacheInfo protocol for the common cache info interface (hits, misses, max_size, current_size)
• cache() return type updated from Callable[[F], F] to Callable[[Callable[P, R]], CachedCallable[P, R]]
• Added _probe to _warp_cache_rs.pyi stub
• typing_extensions dependency added for Python 3.9 only

Document key serialization behavior (#28)

Added "Key serialization behavior" section to docs/usage.md:

• How cache keys are formed from *args/**kwargs (sorted kwargs for determinism)
• Memory backend: Python objects, hash(), single-process
• Shared backend: fast-path binary format for primitives, pickle fallback
• Cross-process determinism: fixed-seed ahash, immune to PYTHONHASHSEED