What's Changed Key bugfix: The removal of `datasets` from the default dependencies in 3.0.0b1 meant that if the user didn't have `datasets` installed, the bootstrapping of MIPROv2 would fail silently, leading to worse optimization. Added `datasets` back in commit 8aa065945. Signatures, Adapters, & Types add dspy.Code by @chenmoneygithub in https://github.com/stanfordnlp/dspy/pull/8511 Provide language to dspy.Code by @chenmoneygithub in https://github.com/stanfordnlp/dspy/pull/8519 Use collections for type hints by @TomeHirata in https://github.com/stanfordnlp/dspy/pull/8513 Add testing for PEP604 union types by @erandeutsch in https://github.com/stanfordnlp/dspy/pull/8475 Fix type annotation for ensure_signature by @grisaitis in https://github.com/stanfordnlp/dspy/pull/8496 Use model_dump instead of dict by @TomeHirata in https://github.com/stanfordnlp/dspy/pull/8493 Fix native function calling in adapters by @chenmoneygithub in https://github.com/stanfordnlp/dspy/pull/8479 Rename dspy.BaseType to dspy.Type by @chenmoneygithub in https://github.com/stanfordnlp/dspy/pull/8510 Resolve "$def" for nested tool arg type by @chenmoneygithub in…