Updates to power method
Updates to power method

- Add profile output in debug.
- Add ability to use wbm.
- Remove rounding of BRF.

anubhavvardhan/qutip,zasdfgbnm/qutip,anubhavvardhan/qutip,qutip/qutip,cgranade/qutip,qutip/qutip,cgranade/qutip,zasdfgbnm/qutip