v0.4.0

What's Changed

• chore: Release by @felixwrt in #17
• Smlreader by @felixwrt in #18
• update CI; add semver checks by @felixwrt in #20
• Change tests/libsml-testing from submodule to subtree by @felixwrt in #21
• Implement std::error::Error for all error types by @linuskmr in #27
• Chores by @felixwrt in #29
• add changelog; improve docs by @felixwrt in #35
• chore: Release by @felixwrt in #36

New Contributors

• @linuskmr made their first contribution in #27

Full Changelog: v0.3.0...v0.4.0