Moved shiftSiteIndex call outside of for loop in computeU CUDA utility
Added fast math flag to cuda compile flags
Added walltime logging of inversion to compute_propagator
Got the computation of the walltime in propagator the wrong way round. Fixed now.
Fixed bad variable labelling in Lattice docstring.
Updated and refactored compute_correlators example to conform to changes in Simulation
Merge branch 'master' of ssh://orentago.linkpc.net:535/pyQCD