• Drush site-install fails with MySQL 8 #4259
• Adding extra information about symlinked packaged commands, see #4290
• Tolerate an unrecognized DB Driver during site:install and bootstrap #4295
• Change from an exception to warning in site:install f93ee99
• Better error message when dropping tables. 4906f6c
• Remove unused SqlBase::delete f5dc954
• Bump Unish's Drupal 9 testing to PHP 7.3 f10313c
• Stop using CONFIG_SYNC_DIRECTORY. (#4301)
• Fix #4098. In Drush config, stop using sql.db-su in favor of just db-su. (#4302).
• Fix #4275. Adjust install instructions for recommended-project.