Provide a layer of conditional includes for specific Drupal versions. One provision install can now drive Drupal 5, 6 and 7 platforms, without needing anything additional downloaded.

Added migrate command. Can no go drush.php provision migrate somesite.com /path/to/other/platform, and it will re-deploy it on the new platform, cleaning up after itself. with full rollback. It will also run any outstanding updates, which means we now (theoretically) have both major and minor version upgrades. What is missing is version checking to ensure you are not deploying on a platform with missing packages etc.

Fix update command, is now called during deploy. Provision can now upgrade between minor versions and major versions. Still missing migrate command