acquia_connector 8.x-1.20

Known issue

Acquia Search users should not use this release. Wait for 8.x-1.21. There is a regression that affects connections to Acquia Search: #3121854: Solr requests fail authentication

This release includes an update hook that moves some configuration into the state system. Be sure to run update.php and re-export your configuration (if you are using configuration management).

• Added Drupal 9 compatibility (Acquia Connector only. Acquia Search dependencies are not yet compatible with Drupal 9).
• Fixed invalid config schema: #2983641: Invalid config schema
• Moved subscription and SPI data out of config and into the state system: #2864697: Move subscription and SPI data out of config and into state API
• Removed usage of md5 hashes, which were flagged by static analysis tools as a security risk (though they weren't being used in a sensitive way): #3105541: Weak algorithms usage should be avoided
• Fixed unnecessary invalidation of cache tags during subscription updates #3105440: Acquia Connector's calling Subscription::update() sometimes invalidates cache tags unnecessarily
• Added an alter hook for the list of possible search cores #2981513: Provide alter hook for the list of possible cores
• Fixed incompatibility with Solr Devel #2838963: Incompatibility with Solr Devel