perf data for basic, dense matching
sparse matching perf data
pairmatch perf data
adding Sweave, most people probably have a copy, but it can be fiddly now and again
moving performance vignette into own directory
Sweave makes the profiling graphs nasty, begining to move profiling to discrete files
setting up global params for plots, moving caliper to own file
moving all the distance stuff into a single file, just easier
moved all distance tests to the distance.R file
moved all the matching performance to own file
providing more text on distance creation profiling
explanatory text for the matching section