GitLab

Made algstrct a pointer everywhere, since C++ does not understand how to copy constructor derived types. Got rid of algstrctcpy and some commented out old code

updated interface set/group/monoid/semiring/ring to not instantiate functions via function pointers passed as function parameters

partial work on group/monoid, deleting function pointer usage as done up to this point after this commit, because it is not instantiatable

Added symmetry folder and symmetrization functionality class and fixed up summation partially, both need more work

Got untyped_tensor to compile for now, implemented/updated slicing functionality and moved code for summation/contraction functionality

Merged dt_aux_sort, dt_aux_rw and whatever was already moved to int_sort into sparse_rw

Some work on int_tensor.cxx (now untyped_tensor.cxx) and associated dependencies