+ Per voxel material coding
+ extended material by average calculation code and some operators
# disabled uniform block compression
# using T::UNDEFINED as concept instead of a variable
# renamed some the variables of SVON
# introduced new tree traversal syntax: Processor Concepts
+ dynamical updating the tree (worst case test scenario)
# bugfix in Model::Update removing voxels made wrong calculations (still seems wrong due to float arithmetic)
# increased performance by deleting empty tree nodes