When removing a notification, it is removed from the model, which will cause the
view to update and move up an older notification, if any. If you now delete a bunch
of notifications in quick succession we will create a dialog every time which then
gets deleted again, causing another notification to move up, etc causing high CPU
spikes and plasma freezes.
This patch compresses removing notifications and tries to announce consecuetive
ranges of notifications to be removed in one go.
BUG: 423594
FIXED-IN: 5.21.0
* Ship some more default rules in plasmanotifyrc
* Improved do not disturb menu (add "for 4 hours" and "until disabled")
* Expand unread notifications by default, overall improved expansion/collapse handling
* Show unread count in panel and reset when plasmoid is closed again
* Move notification sanitizer and its test from dataengine to lib
* Load pixmaps into model also for files and limit their physical size
* Enforce maximum limit for notifications (1000...)
Kai Uwe Broulik
Yuri Chornoivan