=== 1.07: ===

 * ui.checkVersion() added
 * ui, Area, Window: FL_ISWINDOW, FL_DONOTBLIT added and honoured
 * Window:relayout() uses FL_ISWINDOW to avoid expensive uses of instanceOf()
 * Slider knobs are no longer blitted
 * Canvas:damage() did not check for rectangle, corrected
 * Build procedure: builds with just a single display driver can be configured
 entirely via config file now