11ce7829bc
App icons inside folders are already animated when the folder is opened, but moving an app icon from a folder doesn't, making the transition abrupt. Fortunately, it's easy to detect icons that were previously hidden but are not anymore. Add an animation to these icons when showing. WIP: tentatively using the Tweener parameters from Endless OS. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/603