What's new:
- All the souce code is reviewed and rewritten using ES6(+) benefits
- Overlay became necessary. No way to disable it anymore
- New options added and renamed old ones
- Added full keyboard navigation support
- Added support of overflowed menus
- Commented all the code so it would be way much easier for new contributors to get the things
- It's now became possible to use Context Menus without including all the sub-menus source
- Improved perfomance
- Bug fixes
- Animating became way easier
And some other minor stuff I can't recall...