Blender Git Loki

Added note about how constraints are represented + create constraints "stack eval" node

Stub functions for building subgraphs from groups

Spline IK eval graph building

Copying over logic for IK constraint parent-chain walking from depsgraph.c

Code for linking IK solver eval step to affected bones

* Added a new operation node "type tag" for evaluation processes
which take the "final" transform results and perform some "final final"
modifications which can only be done when looking at more than one
item at a time. Examples of this include IK Solvers and Rigidbody Sim Steps

Stub functions for handling IK-Solver Eval Nodes

Some more stubs and ported over code for shading-related nodetrees + datablocks

Copying over logic for building world graph from materials

TODO: perhaps there needs to be a base function for performing the
graph building functionality on these types of ID-blocks?

Rough port of material graph building

Fleshing out includes - adding all common includes which we're likely to need

Building for Texture stacks

Fix incorrect old references

Added stubs for handling IK constraint eval steps

Porting over code to clear ID-tags on datablocks which we perform recursive building with

Stub for defining shader-nodes graph

Restore missing brace

Stub for particle-systems stuff

Stub for compositing

Hook up DEG_get_node_from_pointer() logic

Sequence strip handling for RNA -> DepsNodes