add support for the 'alert(...)' pseudo class to the qcss translator
add the ability to retrieve the label widget of a title bar
a the label method as part of the formal api
tweak abstract definition
add support for a cycling alert level
clear the item alert on maximized item click
expose the dock item alert functionality to the frontend
expose the alert state to the dock container
fix typo in signal connection
support alert pseudoclass in dock bar button css
hook up the dock bar button to the alerted signal
add alert support to the tab bar tabs
clear the alert when a dock button is pressed
add a dock item alert example
add docs and slot the tab data class
Merge pull request #77 from nucleic/feature-dock-item-alert

Feature dock item alert