v0.2.1

This is just a maintenance release. No functional changes. It moves test dependencies to a new module, to reduce dependencies of the main module, and updates CI to run tests against Go versions 1.23 and 1.24.

What's Changed

• Move all tests to a separate module to reduce dependencies by @Yiling-J in #72
• Run tests against Go 1.23 & 1.24 by @flimzy in #73

Full Changelog: v0.2.0...v0.2.1