Feature: Rewritten the Data Clean tool, to be more general and with the possibility to select the data blocks to delete. This might increase performance drastically if the data blocks are heavy.
Enhancement: Implemented sub-panels in the UI. This should make the UI faster and more responsive when collapsing/expanding sections.
Added button in Viewport to quickly simplify a scene, and enable/disable Eevee fast normals. If needed, this feature can be disabled in the add-on settings.