* recompute maps every time SK called rather than saving them
* user saves and feeds in chemical potential and dc manually
* set_dc sets dc to known values (eg from previous calculations) while calc_dc computes them
* find_mu -> calc_mu to match API for other functions
* hamiltonians contains functions to create basic hamiltonians
* Us are now computed by a compact python script
* solver_multiband sets up the local problem for LDA+DMFT