Bug fixes

Parity release with drupal/ldap:4.0-alpha1

New tests still a work in progress, no general change in sign-in logic but some code cleanup.

This release is the first to be based on symfony/ldap and is a major rewrite of the 3.x branch.

Feedback in the issue queue and testing with actual directories is very much appreciated, as are patches. You can also give feedback on Slack in #ldap.

• Issue #3103554 by Abdelrahman_Amer: Fixed notice for [Varbase Media] oembed iframe on an Undefined index: render element in drupal_find_theme_templates()

Fix minor warning messages.

Fix Javascript to only run once.

Update to new coding standards.

Fix bug from code cleanup.

Issue #3103221: Replace deprecated progressbar library

Issue #3103253: Add support for non-interactive batch jobs

Issue #3103500: Port for Drupal 9 (includes bug fixes for task listing)