v0.3.0

This release introduces improvements in performance and memory usage for complex workflows by eliminating unnecessary broker round-trips and enabling external callback storage to reduce message payload size.

What's Changed

• Allow custom callback store to reduce message payload size and support external storage backends by @pencil in #8
• Fix caching of broker middleware to avoid redundant traversal on every invocation by @pencil in #9
• Skip no-op task scheduling for empty chains and groups by @pencil in #7
• Add official support for Python 3.13 by @pencil in #6

Full Changelog: v0.2.0...v0.3.0