Separate files with multi-site uniform ansatz.
Fix CG energy.
Set eta, fix expand.
Fix state loading.
Add general calc_BB functions and add dynamical expansion to uniform_multi.
Fix bug in uniform_multi dynamical expansion.
Correct correlation length for multi.
Add missing functionality in mps_uniform_multi.
Make fidelity_per_site into a per_site value again by taking the Lth root.
Merge branch 'master' into multi_uni
Merge branch 'master' into multi_uni
Update dynamical expansion params.
Move S_hcs initialization to _init_arrays.
Make L a named, optional argument.
Add calc_K_l to multi. Also remove unused sanity_checks argument for K functions in common. Add cython extras for 3s K functions.
Put excitations stuff in a separate file and make it work with uniform_multi for L=1.
Make some expect... n arguments optional (default to 0).
Replace uniform with uniform_multi.
Remove s's and merge prereq functions in excite.
Pass on brute argument.