* remove sender
* removed priority post
* timer fix
* test fixes
* drop async version of post_message
* extended docs
* fix no app
* Added control properties
* changelog
* changelog
* changelog
* fix for stopping timers
* changelog
* added aliases to radio and checkbox
* Drop sender from Message init
* drop time
* drop cast
* Added aliases
... which means they get passesd x, y, etc. In particular,
they are passed the keyboard modifiers. This allows widgets
to use e.g. ctrl-wheel to scroll right/left.
