* Require contrib version of HAL in composer.json.

* D10 readiness.

* typo.

* another typo.

* Update .github/workflows/build-2.x.yml

Co-authored-by: Adam <adam-vessey@users.noreply.github.com>

* syntax.

* Remove deprecated code.

* is now protected per drupal.org/node/2909426

* Add 3.x workflow and note in README.

* Update to only be D10 compatible.

* Use D10-friendly CI

* Deprecations.

* Deprecated use of NULL in \DateTime call.

* Use default branch of islandora-ci

---------

Co-authored-by: Adam <adam-vessey@users.noreply.github.com>