Drop gallery.dev.css.
Update gallery.css and bring in gallery.min.css.
Version bump to 1.0.0-alpha-1.
Move gallery.php to inc/gallery.php.
Quick fix for the "Creating default object from empty value" warning.
Bring in update from Hybrid Core to get actual gallery script to where it needs to be.
Move admin files to the `admin` folder.
Create the main plugin class `Cleaner_Gallery_Plugin` and split the plugin filters into `inc/default-filters.php`.
Overhaul of the default filters and functions.
Re-add the CLEANER_GALLERY_DIR and CLEANER_GALLERY_URI constants.
Remove old CSS files.
Remove old translation files.
Drop old settings page in favor of a more standardized WordPress settings page.
Drop $cleaner_gallery global forever.
Add custom plugin row meta with support, rate, and donate links.
Change donation link text.
Update plugin description.
Add extra inline docs.
Load the gallery.min.css file instead of gallery.css.
Drop the admin register scripts function since it's no longer needed.