Merge pull request #35 from dlazell/mybranch

Mybranch
Merge pull request #36 from dlazell/mybranch

added two more tests
Merge pull request #38 from dlazell/mybranch

changed readme and slug.c
Merge pull request #39 from dlazell/mybranch

changed std dev routine back to what it was, the change i made before wa...
Merge remote-tracking branch 'upstream/master' into mybranch