* add failing tests to prove the outside-click issue
* fix outside click when we have multiple menu's
- We removed the `toggleMenu` since we only used it in a single spot,
and had to do some side effect logic (focus & event.preventDefault).
Wanted to make this consistent between React and Vue.
- If, in the "outside click" logic we detect that we clicked on the
button, we also ignore it.
- If, we click on the button we will toggle the menu.
Fixes: #18
Robin Malfait
93e8b8f4ba