- I have re-runned all tests with the new defaults (mix hamiltonian
  and H converge as well.)

  A couple of the tests showed changes (see r554) which could
  be explained by a not fully converged system in the mix DM case.

  As such it seems these new defaults exhibit superior convergence
  and, hopefully, more consistent results as both the Hamiltonian and
  DM are converged.

  It would perhaps be interesting to also converge EDM?

- A couple of the tests was not added in the previous reference frame
  and they are now there.
  I haven't compared these against the old version.
  These tests are:
    anneal-cont.out
    carbon_nanoscroll.out
    dipole_correction.out
    fe_cohp.out
    fe_noncol_kp.out
    fen.out
    force_constants.out
    ge111.out
    h2o-rhog-mixing.out
    h2o_2.out
    pb_bulk.out
    si001.out
    sinw.out
    sinw_2.out