Task list for quill

Adds a task / todo list to the quill editor. Behaves as the built-in bullet
list.
Includes a toolbar item.

The list items are clickable. A click on an item toggles the item as checked.

!Toolbar icon and task list

Usage

1. Require or import the JavaScript and the SASS file in your interwebs page, after the main quill.js.
1. Configure the module when instantiating quill

``javascript
this.editor = new Quill('#editor', {
modules: {
'toolbar': [ 'task-list' ],
'task-list': true
}
});
`

TODO


* For now the click triggers a dummy update, because the css class toggle
doesn't trigger a change in quill. The proper way would be to change the
state of the item by using a delta directly and maybe two kinds of list item
classes (a normal TaskListItem and a CheckedTasklistItem` or something.
Fixing this would also fix the history. This may be easy for someone
familiar with the internals of quill.

License

BSD 3-clause (the same one that Quill uses)