0.6.2

This has been out on crates.io for a while now, but there was no github release.

0.6.2:

• Add support for optional serde feature

0.6.1:

• Error now implements Display and Error
• Many schema types now implement Eq
• Fix broken class test
• Bump rust edition to 2021

Full Changelog: v0.6.0...v0.6.2