GitLab

Also made norms (except for the 2-norm) operate on the default ring rather than the specified algebraic structure

Fixed "universe" world, got rid of unuzed macros in util.h and reorganized contractions in fast 4D alg a bit

Renived sym3, which only makes sense when without sym sum, updated from v1.0 interface to namespace interface in examples/tests/studies, got fast algorithms working

Reorganized examples folder into tests/benchmarks/studies/examples and added configure mechanism adapted from Aquarius and NuLAB

Also, simplified interface.

Addec a couple of unit tests and turned on diagonal rescaling. SCF may be incorrect currently though