bump version to 2.3.1

fix: validate JSONP callback and deprecate JSONP support

docs: add security warnings about query operator field enumeration

fix: changelog link

bump version to 2.3.0

changelog for #1569

Emanuele di Giacomo

Shift by a few chars the description of the resource options in config.rst

Add optimize_pagination_for_speed to documentation

Fix typo

Fix typo

Test OPTIMIZE_PAGINATION_FOR_SPEED in default settings

Remove tests for global setting OPTIMIZE_PAGINATION_FOR_SPEED

optimize_pagination_for_speed

fix ReadTheDocs build: update Sphinx and docs dependencies