Fix continous determination
Merge pull request #102 from mdboom/fix-continuous

Fix continous determination
allow specifying env in util.check_output
Fix the order of the commit hashes in "find" command.
Merge pull request #105 from mdboom/correct-order-find-hashes

Fix the order of the commit hashes in "find" command.
Merge pull request #103 from minrk/env

allow specifying env in util.check_output
Added a new compare commands to compare two revisions
Add split option
Added split option
Fix bug with color
Added section to using.rst
Added unit test for compare command
Implement -—machine option
Find average over configurations
Add visual marker (in addition to color) for results.
Faster lookup of relevant results.