fix default elements for ccbar_asymm basis

[tgiani]

V15 was missing from the defualts_elemets of the CCBAR_ASYMM and this was breaking vp-nextfitruncard

[Zaharid]

Please add a test somewhere. The way this is done at the moment is changing evolution as well. Not sure that is intended.

[tgiani]

ah right

[tgiani]

I think it s probably better to redefine the basis altogether? I mean without doing CCBAR_ASYMM = evolution ?

[RoyStegeman]

You could also just use copy.deepcopy, that way you don't have to define the basis transformation twice.

[scarlehoff]

I think this would be good to be merged (and since we are discussing ccbar I'd feel better if we are all in the same page -or branch-)

@Zaharid what kind of tests would you add?

[RoyStegeman]

Yes this should be merged, don't want to keep the current bugged (buggish?) implementation in main.

Also wondering about what tests you had in mind. There's not really a clean way to test it, unless we want to do so for all bases explicitly just to prevent us from doing something like this again. Perhaps instead we should just remove EVOLUTION = evolution (and instead do EVOL = LinearBasis.... ) to make it less likely to accidentaly intruduce bugs like this, or we can also add EVOL = copy.deepcopy(evolution), mostly code is just copy-paste with a minor edit anyway.