Tests for direction (but one fails).
Events.
More tests for events.
Transition event: allow inspection of previous and current.
Update todo.
Remove event.
Hmm.
Add tests for .go delegates.
More tests.
Update stack to be an array.
Report jsdom errors.
Documentation.
Update tests and todo.
Refactor `stack` to be a proper array.
Allow 'no extra markup' mode by not passing any args to the initializers.
Update documentation.
Update tests to use new API.
Update more tests, and add deprecation warning.
Don't create extra divs by default.