ADDED appendTo prop - appends the helper to the selected DOM node.
ADDED Typescript support ADDED Settling animation, the drag helper will now settle back into its new location after releasing the drag. BREAKING: sortStart, sortMove, and sortEnd events are now kebab-case (sort-start, sort-move, sort-end) as per standard practice. Any previous event listeners will need to be updated
Fixed a bug in firefox where the text got selected upon dragging
Fixed bug where the node index wasn't being updated on the manager
Initial push: Convert library from react to vue.