Basis control on Relaxation tensor requires some more elaboration. Currently, there are too many basis changes enforced!

[tmancal74]

Because Redfield tensor HAS TO be calculated in the excitonic basis, and the Hamiltonian HAS TO be submitted in the local basis, we end up with unnecessary transformations of the whole tensor right after its creation. This has to be circumvented! Suggestion is to implement basis management context managers which KNOW about excitonic and diabatic basis and avoid unnecessary transformation enforce by the fact that current basis context managers blindly transform when basis is changed.

[tmancal74]

First solution provided: BasesManaged has a metod protect_basis()

[tmancal74]

Method unprotect_basis() is present, but does not work.