Version 2.12.0:
* Improve the `VIRTUAFIELDS` request of the `EXPRESSION` service:
* Support a new `LIMIT` parameter to limit the number of features returned
* Support new `SORTING_FIELD` and `SORTING_ORDER` parameters to set the order
of the returned features
* Filter by polygon: fix a bug when the QGIS table datasource property is a
query
* Remove the use of deprecated methods from the QGIS API
* Support for Qt6
* Tests - Add QGIS 3.40 for testing
* Support for QJazz, instead of Py-QGIS-Server 2
Version 2.11.2:
* Fix wrong variable in the server information handler
Version 2.11.1:
* Improve the server information handler
