Add compatibility with jQuery 3 and remove some deprecated JS code Frontend and backend JS code generated various warnings or fatal errors due to the deprecation of some functions in jQuery 3. The fatal errors made the plugin incompatible with WordPress 5.6. - Replaced jQuery mobile with Andrés Zsögön's jquery.events.swipe library for handling swipe events on mobile and mouse drag events on desktop. jQuery mobile is not compatible with jQuery 3, so it could no longer be used. - Replaced some jQuery functions that were still present in jQuery 3 but considered deprecated.