Merge pull request #19 from yarikoptic/master

ENH: more verbose reporting in case of failures to run benchmarks
BUG: remove * import
Merge pull request #28 from cpcloud/remove-star-import-from-git-py

BUG: remove star import
ENH: run_order option for BenchmarkRunner with "multires" support

If there is a bulk of commits to benchmark but it is desired to review
global trends asap it would be worth to traverse the revisions in order
increasing temporal detail.  multires option for run_order would do precisely
that.  See docstring for multires_order function