Show more details when executing sql-sync in --simulate mode
Skip rsync in sql sync if source and destination are both local
Log the query in both debug and simulate mode.
Carefully bootstrap Drupal in the Drush sql commands, so that operations on the sql database (especially sql-create) will work correctly, even if Drupal is not fully initialized.
Merge pull request #746 from greg-1-anderson/sqlsync

Drush sql regressions