Vytautas Abramavicius

`TDGenerator` as a class is mainly for encapsulating schedule of generators (essentially, when to use what blocks) and doing operations on these schedules. But underlying blocks are parametrized blocks already...

One more thought: if we want to support mixing the new time-dependent `HamEvo` block with ordinary blocks in the same circuit, it would make sense to all the blocks derived...

Completed with PR #568