 - bug in debug mode where everything goes into 1 notebook
	(probably placeholder related)
 - placeholders in layout store/restore
 - docs
 - when we can use pango 1.6, use the built-in ellipsizing
 - audit event emitting frequency
 - use less ArrayLists
 - doubleclick to toggle maximize/restore of a tab

potential new features
 - restore size/position on de-iconify?
 - autohide, bug 54686
