UE4 MF: All Lemming's Material Functions

All materials and material functions created by the Lemming's Group.

Сontains:
- Functions for working with coordinates
- Mixing Methods and Recalculation Methods
- Main materials: hair, props, skin, etc.
- Generators of basic forms, recalculation of normal maps, curvatures, etc.
- And Functions under development.

The set will be periodically updated.