Julian Eisel
b077de086e
We can avoid the rather expensive outliner tree rebuilds and only redraw if nothing but the selection or active item changes. This should give a bit of speedup for heavy scenes. For this to work I had to correct a few notifiers, some were only sending selection/active change notifiers that actually did things like adding objects. I also added a more precise notifier type for when the active collection changes. At the notifier subtype/action level we're not even close to running out of bits, so this should be fine. Also had to correct a wrong notifier check (was using `&` rather than `==`).