Consolidate simulation classes; don't wrap SpinMatrix in PolMatrices
- Consolidate simulation classes
- merge moveDataFromCache into packResults
- rm unnecessary copy or move operations
- in particular, simplify OffspecSimulation::packResults
- Unify vocabulary for polarization (this resolves #412 (closed))
- rm class PolMatrices (this resolves #415 (closed))
- all Element code now in Resample/Element
Edited by Joachim Wuttke