Blender Git Loki

Cleanup: remove unused code & add comments

Fix T58027: Scene.ray_cast crash

Reintroduce BASE_VISIBLE_BGMODE

D3987 by @Soundwave

Fix object selection in edit-mode

Ctrl-RMB in edit-mode is needed for setting vertex parent.

Fix proportional edit-mode w/ multi-object editing

D3992 by @Al

3D View: remove 3D cursor

Use 3D cursor from the scene (was previously used for local-view).

Fix extended shading pie menu not having same order as before.

Cleanup: unused vars, imports

Cleanup: unused vars

Cleanup: unused vars, imports

removed separate pack operator, execute fracture handles this now

Fix some errors in the Blender Light theme.

Fix missing versioning code for user preferences navigation bar.

Fix multiply error when blend layer do not cover below layer

Tools: add Select tool, with transform tweak on drag and no click delay.

For users that want the 2.7 LMB keymap behavior, this provides a way of
working without tools interfering. For RMB select this operator is quite
redundant with the Cursor tool, we may have to find a solution for that.

Note that we also might later add transform tweak to the transform tools,
when nothing is selected. But this is important for existing users who
preferred the existing workflow.

Keymaps: add 3D view click empty space to deselect all.

The implementation of this operator was modified to be more efficient and
ensure the undo history has the exact operator used.

Cleanup: Silent compiler warning

A void function cannot return a value.

UI: Disable font shadow in tooltip

When I added this a few years ago, it was meant to create a fake bold effect.
With the new text shadow drawing code, that doesn't work well though.

Merge branch 'blender2.8' into greasepencil-object

Fix opacity problems when value is 0

Fix noise in blend layers

The antialiasing is generating noise in intermediate layers.