Add unit test for validating trotterization order

[jmbr]

Add unit test validating the order of the trotterization schemes.

[appleby]

Semaphore is complaining about scipy. Probably needs to be added to requirements.txt.

Is there any sane way to avoid the scipy dependency? Scipy is useful enough that I don't feel that bad about adding it to dependencies (I'm a little surprised we didn't already depend on it), but if there is a not-too-onerous way to avoid pulling it in just for this test, that might be preferable.

[jmbr]

Semaphore is complaining about scipy. Probably needs to be added to requirements.txt.

Is there any sane way to avoid the scipy dependency? Scipy is useful enough that I don't feel that bad about adding it to dependencies (I'm a little surprised we didn't already depend on it), but if there is a not-too-onerous way to avoid pulling it in just for this test, that might be preferable.

Thanks for pointing the dependency out. I took it for granted that it was one of the prerequisites. I think I can work around it, though.

[appleby]

I had to google "matrix exponential" so I'm probably not the best person to review the math here, but otherwise lgtm.

[braised-babbage]

Nice

[karalekas]

All this needs is a CHANGELOG entry and it's ready to merge.