BUG: Fix optimization for full_output = False
STY: Clean up commented out code
TST: Test fit funcs for full_output = False
Merge pull request #730 from jseabold/fix-opt-fulloutput

BUG: Fix opt when full_output=False. Closes #450.
MAINT: Use virtualenv correctly
Merge branch 'fix-update-web'

* fix-update-web:
  MAINT: Use virtualenv correctly
ENH: Handle wrapped results. Closes #715.
TST: Test regression plots with pandas. Closes #716.
Merge pull request #731 from jseabold/handle-wrapped

Handle wrapped results. Closes #715 and #716.