Ocpp-van

- [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.

- [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.

- [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.

- [438] feat: add optional param for passing an unique_id to call method. Thanks [santiagosalamandri](https://github.com/santiagosalamandri)
- [420] fix: type hint child_certificate_hash_data type. Thanks [santiagosalamandri](https://github.com/santiagosalamandri)