BF-admins agree to remove header information that isn't useful,
to reduce noise.
- BEGIN/END license blocks
Developers should add non license comments as separate comment blocks.
No need for separator text.
- Contributors
This is often invalid, outdated or misleading
especially when splitting files.
It's more useful to git-blame to find out who has developed the code.
See P901 for script to perform these edits.
This is a lots of changes, but they are boiling down to a simple API
changes where we are no longer relying on implicit usage of scene's
depsgraph and pass depsgraph explicitly.
There should be no user measurable difference, render_layer* tests
are also passing.
It was not so much better from performance point of view to have
a special case here and it only made us having two entry points
to the same things, which was rather annoying.
Should no be functional changes for artists.
