v0.9.1 improvements in group decomposition
Separating computation of transversals and component groups into different functions: FLTransversals, FLComponents. This is useful for computing decompositions partially, in case the whole FLCascadeGroup is not feasible. ValidPoints is now defined as an attribute of FLCascadeGroup to avoid recalculation. Standard way of testing with TestPackage("sgpdec") is available now.