`mutex` v1.0.1, `mutex-traits` v1.0.1

What's Changed

• Implement optional unwinding support by @jamesmunns in #19
• Add docs to help choosing a lock impl by @jamesmunns in #20
• Fix assert, remove unused attrs by @jamesmunns in #18

Full Changelog: mutex-v1.0.0...mutex-v1.0.1