almost-publication-quality plots

control black and white color scheme by command line option

pretty printing various plot elements

pretty heatmap
Merge pull request #2 from kmrz/cputime-float-parsing

parse PIK-IPLEX-2009-1.swf that uses float for the field "Average CPU time used"
Merge pull request #3 from kmrz/lb-min-length

specify minimal job length for stretch calculation
Merge pull request #4 from kmrz/log-by-workload2

fix logging for multiprocessor simulator runs
Merge branch 'kmrz-quality-plotting2'
pull merges
Merge remote-tracking branch 'upstream/master'
automatically run tests for multiple workloads
process traces in parallel
draw or simulate by command-line
run non-clairvoyant and clairvoyant in parallel
gitignore files produced by testrunner (and osx system files)
Merge branch 'testrunner'