Added gitignore
Added Ising/XY model parallelization of sweeps in TParallelIsing/TParallelXY
Added ising-par and xy-par to run simulations on TParallelIsing/TParallelXY; added TLatticeIsing::GetNeighbors() for future optimizations
Added TLatticeXY::AnalyzeStateSpace() for some fruitless tests; added some more initialization options to TLatticeXY::Init()
Returned TMultiXY Hamiltonian to the original definition in the cited paper
Some minor changes to xy-corr
Modified xy-meta to be able to take averages of multiple runs when plotting time-observables
Some extra winding histogram output to xy-mprb