v0.4.2

What's Changed

• fix: update event time filter transformer to use tag by @KeranYang in #92
• chore: use ruff for linting; add precommit conf by @ab93 in #94
• feat: introduce MapStreamFn for streaming map udf in async sever by @xdevxy in #93
• feat!: support len, iter and indexing on udf datatypes by @ab93 in #96
• chore: improve udsink dtypes by @ab93 in #97
• chore: add map stream udf example by @xdevxy in #95
• chore: bump version to '0.4.2' by @xdevxy in #98

Full Changelog: v0.4.1...v0.4.2