Blender Git Loki

Unittest: refresh blender between tests

Mesh batch caches should not be stored in file

Properties Editor: Collection context

Collections Editor: populate header with operators

SceneCollection.objects.active_index (for user interface)

Collection related operators barebones

Those are the operators for the collections editor, and the collection property panel

RNA: collection override

bpy.context.layer_collection

Fixed unfreed memory

Fix crash on read file

Fixed Pointer problem. Now materials are working.

Added scene.active_engine_settings

Collection Editor based on patch by Julian Eisel

This is extracted from the layer-manager branch. With the following
changes:

* Renamed references of layer manager to collections manager
* I didn't include the editors/space_collections/ draw and util files.

I still need to bring the drawing code here, so we see something.

Layers: allow anonymous collection, and set active collection when linking it

Fixed Engine name length

Fix read/writefile.c

Changes to DNA/RNA. Follow same layout as sensors.

Change in DNA/RNA. Still missing freeing and read/write.

Added switch to test viewport cache

Temporarily prevent crash on edit mode