Prerequisites to beta cluster deployment are documented here: https://www.mediawiki.org/wiki/Writing_an_extension_for_deployment#Deploy_to_Beta_Cluster
- Add extension submodule to the git mediawiki/extensions repo rMEXT77531bfb1753: Add SimilarEditors
- Add extension to the json make-release tool rMRELe8f57b11a820: make-release: Start branching SimilarEditors extension for production
- Wait for the release to hit all branches in production (~Thursday, May 26th)
- Add extension to extension-list https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/789250/
- Add extension config variable to InitialiseSettings.php and set it to be default false https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/793500
- Load extension in CommonSettings.php https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/793501