Ocpp-van

- [434](https://github.com/mobilityhouse/ocpp/issues/407) Add custom_data attribute to payload-related dataclasses. [will-fs](https://github.com/will-fs)

- [413](https://github.com/mobilityhouse/ocpp/issues/407) Add enum for OCPP 1.6 ConfigurationKey. Thansks [isabelle-tmh](https://github.com/isabelle-tmh) and [lbbrhzn](https://github.com/lbbrhzn)
- [407](https://github.com/mobilityhouse/ocpp/issues/407) Fix build that publishes release to pypi.

- [401](https://github.com/mobilityhouse/ocpp/issues/401) Fix serialization error when receiving invalid inbound Call.
- [402](https://github.com/mobilityhouse/ocpp/issues/402) Update development dependencies.
- [382](https://github.com/mobilityhouse/ocpp/issues/382) Added missing ' (single quote) to error message. Thanks [BIGduzy](https://github.com/BIGduzy)
- [374](https://github.com/mobilityhouse/ocpp/issues/374) Run tests in CI build that builds package and releases it to Pypi. Thanks [aysauchoa](https://github.com/aysauchoa)
- [384](https://github.com/mobilityhouse/ocpp/issues/384) Include OCPP message that causes OCPPError. Thanks [klimaschkas](https://github.com/klimaschkas)
- [385](https://github.com/mobilityhouse/ocpp/issues/385) Integrate black and isort. Thanks [proelke](https://github.com/proelke)
- [331](https://github.com/mobilityhouse/ocpp/issues/331) Add missing variant to OCPP 2.0.1 enum DataType.password_string. Thanks [mdwcrft](https://github.com/mdwcrft)
- [332](https://github.com/mobilityhouse/ocpp/issues/332) Update OCPP 2.0.1 ConnectorType enum variants introduced in errata. Thanks [mdwcrft](https://github.com/mdwcrft)
- [379](https://github.com/mobilityhouse/ocpp/issues/379) Fix typo in OCPP 2.0.1 attribute FirmwareType.retrieve_data. Thanks [mdwcrft](https://github.com/mdwcrft)
- [369](https://github.com/mobilityhouse/ocpp/issues/369) Make sure that CI use latest Python 3.10 release. Thanks [adamchainz](https://github.com/adamchainz)
- [353](https://github.com/mobilityhouse/ocpp/issues/343) Fix typo in OCPP 2.0.1 enum variant MessageTrigger.sign_v2g_certificate. Thanks [proelke](https://github.com/proelke)
- [359](https://github.com/mobilityhouse/ocpp/issues/359) Add enum for OCPP 2.0.1's SecurityEvent. Thanks [proelke](https://github.com/proelke)

- [306](https://github.com/mobilityhouse/ocpp/issues/306) Fix type hint `ocpp.v201.datatypes.MeterValueType.sampled_value`. Thanks [Shadowsith](https://github.com/Shadowsith)
- [328](https://github.com/mobilityhouse/ocpp/issues/324) Add missing attribute `ocpp.v201.dataypes.SampledValueType.measurand`.Thanks [maurerle](https://github.com/maurerle)
- [335](https://github.com/mobilityhouse/ocpp/issues/335) Improve Exception handling and CallError responses. Thanks [proelke](https://github.com/proelke)
- [316](https://github.com/mobilityhouse/ocpp/issues/333) Drop Python 3.6 support and update jsonschema to 4.4. Thanks [laysauchoa](https://github.com/laysauchoa)

- [316](https://github.com/mobilityhouse/ocpp/issues/316) Fix definition of `GetVariableResultType.variable`. Thanks [HugoJP1](https://github.com/HugoJP1)

- [312](https://github.com/mobilityhouse/ocpp/issues/312) Raise `TypeConstraintViolationError` instead of `ValidationError` when value exceeds length limit. Thanks [tmh-grunwald-markus](https://github.com/tmh-grunwald-markus)