Made it so that on Travis CI, only the default version of python is run (since they annoyingly have extra versions installed), while still testing all versions elsewhere.
Made it so that on Travis CI, only the default version of python is run (since they annoyingly have extra versions installed), while still testing all versions elsewhere.

krisztianfekete/green,CleanCut/green,wfxiang08/green,CleanCut/green,wfxiang08/green,krisztianfekete/green,wfxiang08/green