v0.4.3

What's Changed

• Add documentation by @davidbrochart in https://github.com/davidbrochart/pycrdt/pull/34
• Update documentation with transactions and events by @davidbrochart in https://github.com/davidbrochart/pycrdt/pull/35
• Support read-only transaction in observer callback by @davidbrochart in https://github.com/davidbrochart/pycrdt/pull/36

Full Changelog: davidbrochart/pycrdt@v0.4.2...v0.4.3