Toggles V3

- Improved API (allows usage of `myToggle.toggle(state)`)
- Misc bug fixes
- More maintainable code
- `myToggle.active` property which will reliably return the toggle state
- No longer using CSS animations - smaller + easier to work with code 

Fixes #29, #28

Todo:

- [x] fix #19 
- [x] check if #27 is fixed (fixed but by removing touch event support)
- [x] fix #25