Release 0.6.0

Release 0.5.0

Release 0.4.0

Release 0.3.2

* Fix: adapt to changes in QuTiP 4.4
* Fix: adapt to changes in Sphinx (better-apidoc 0.3.1)

Release 0.3.1

Fix: the routine `make_PE_krotov_chi_constructor` now returns a
function that is compatible with a stricter interface for
`chi_constructor` in the `krotov` packages (which now requires that
`chi_constructor` routines accept keyword arguments).

Release 0.3.0

Bump version and HISTORY

Bump version and update HISTORY