Fix: re-optimizing already optimized images now works correctly. The original is restored from its backup first, so images are never compressed twice. Images without a backup are skipped and reported.
1.1.0
New: WP-CLI support — manage optimization from the command line with wp slashimage status, optimize [<ids>|–all] [–force], restore [<ids>|–all] [–yes], and cancel. Useful for large libraries and hosts where WP-Cron is disabled.