Ensure that xerus works at least with tensors of size 2^64-1 (size_t).
Tensors (e.g. TTTensors) with order 10 and dimensions 10 do not fit in an unit32, causing serious malfunction somewhere in xerus.
Tensors (e.g. TTTensors) with order 10 and dimensions 10 do not fit in an unit32, causing serious malfunction somewhere in xerus.