react-dnd-style drag and drop for Angular, built on
dnd-core.
examples: https://cormacrelf.github.io/angular-skyhook/examples/
core: https://cormacrelf.github.io/angular-skyhook
multi-backend: https://cormacrelf.github.io/angular-skyhook/multi-backend/
sortable: https://cormacrelf.github.io/angular-skyhook/sortable/
https://github.com/cormacrelf/angular-skyhook/blob/master/CHANGELOG.md
