v5.1.0

Changes

• Updated code style to PER-CS2x0
• Updated GitHub workflow to run with more PHP versions and also with lowest dependencies

Fixes

• Minimum doctrine/orm version requirement. It was 2.11 before, but that was incorrect and didn't work. The minimum version is 2.14.3.
• Small issue with older doctrine/orm versions creating the EntityManager in tests
• Not running coverage by default with PHPUnit as that prevented running tests without xdebug.

Full Changelog: v5.0.0...v5.1.0