Ocpp

- [366](https://github.com/mobilityhouse/ocpp/issues/366) Fix type hint of OCPP 1.6 ChangeConfiguration.value
- [431](https://github.com/mobilityhouse/ocpp/issues/431) Attributes with 'v2x' are serialized as 'V2x', but should be serialized as 'V2X'
- [554](https://github.com/mobilityhouse/ocpp/issues/554) OCPP 2.0.1 Edition 2 Errata 2023-12 document added
- [548](https://github.com/mobilityhouse/ocpp/issues/548) OCPP 2.0.1 MessageInfoType attribute name correction
- [300](https://github.com/mobilityhouse/ocpp/issues/300) OCPP 2.0.1 add reference components and variables
- [518](https://github.com/mobilityhouse/ocpp/issues/518) OCPP 2.0.1 add additional reason codes from v1.3

- [539](https://github.com/mobilityhouse/ocpp/issues/539) feat: Add ChargePoint._handle_call return value. Thanks [wafa-yah](https://github.com/wafa-yah)
- [266](https://github.com/mobilityhouse/ocpp/issues/266) fix: Central System documentation link.
- [516](https://github.com/mobilityhouse/ocpp/issues/516) OCPP 2.0.1 add additional security events from v1.3.
- [537](https://github.com/mobilityhouse/ocpp/pull/537) Fix DataTransfer data types. Thanks [mdwcrft](https://github.com/mdwcrft)

- [531] Feat: Add 1.6 security extension datatypes. Thanks [proelke](https://github.com/proelke)
- [528](https://github.com/mobilityhouse/ocpp/issues/528) v2.0.1 CertificateHashDataChainType childCertificateHashData requires the default of None.
- [510](https://github.com/mobilityhouse/ocpp/issues/510) v2.0.1 UnitOfMeasureType - Enums missing and update docstring to allow use for variableCharacteristics.
- [508](https://github.com/mobilityhouse/ocpp/issues/508) Exception - OccurrenceConstraintViolationError doc string correction.
- [511](https://github.com/mobilityhouse/ocpp/issues/511) 2.0.1 Units of Measure update to match Appendix 2. Standardized Units Of Measure

- [493](https://github.com/mobilityhouse/ocpp/issues/493) Reduce use of NotSupportedError in favor of NotImplementedError. Thanks [drc38](https://github.com/drc38).
- [278](https://github.com/mobilityhouse/ocpp/pull/278) Fix types for attributes of OCPP 1.6's type `IdTagInfo`. Thanks [chan-vince](https://github.com/chan-vince)
- [504](https://github.com/mobilityhouse/ocpp/pull/504) Add missing tech_info attribute to v2.0.1 EventDataType. Thanks [LokiHokie](https://github.com/LokiHokie)
- [381](https://github.com/mobilityhouse/ocpp/issues/381) Add FormationError and OccurrenceConstraintViolationError.
- [373](https://github.com/mobilityhouse/ocpp/issues/373) v201.datatypes.ChargingNeedsType.request_energy_transfer is mistyped
- [207](https://github.com/mobilityhouse/ocpp/issues/207) v16/schemas/StopTransaction.json missing "Hertz"

- [492] Minor fixes _handle_call doc string - Thanks drc38
- [485](https://github.com/mobilityhouse/ocpp/issues/485) Update documents for 2.0.1 to lastest; removed 2.0 docs
- [412](https://github.com/mobilityhouse/ocpp/issues/412) Add default value to 1.6 AuthorizationData datatype, id_tag_info
- [141](https://github.com/mobilityhouse/ocpp/issues/141) Add to docs OCPP 1.6 Security White Paper Ed 2

- [471](https://github.com/mobilityhouse/ocpp/issues/471) Fix `ImportError` when using jsonschema 4.19.0 or higher.
- Fix import error in v201 example. Thanks [Shiwei-Shen](https://github.com/Shiwei-Shen)!
- Update Poetry to 1.5.1 in CI.