Version 4.0.8 2021-12-14

* Error handling to prepare for Neo4j update to 4.4 (thank you Alessandro Marchetti)
* Fix "After ServiceUnavailable error, connection pool is broken and does not recover" (#551) thank you @olegchigirin
* Fix DateProperty inflate (#586) thank you @ralfeus
* Use modern python API for metadata (#587) thank you Park, Yury