# 0.12.1
* Impl UsedEvent for Result<T,E> and Option<T> where T: UsedEvent.
# 0.12.0
* Add trait UsedEvent to enable layering of widgets. Provides the
information whether an event has been consumed by a inner layer.
# 0.11.0
* Add utils for row_at_clicked, column_at_clicked, row_at_drag, column_at_drag.
# 0.10.0
* Fix handle() to take a &Event instead of an Event. This was so in the
original, but I was too clever. In general event types are not necessarily
Copy but read only, so `&` should be fine.
# 0.9.0
Initial release.