TST: mark test_yahoo/test_options as failing (and skip)
TST: correctly mark test_options in test_yahoo to skip
BUG: Removed import nose on top of testing.py script
BUG: Use Series.where rather than np.where in clip
Merge pull request #3998 from mtkni/series_clip_timestamp

BUG: Use Series.where rather than np.where in clip
Merge pull request #4030 from ogiaquino/Remove_import_nose_in_testing.py

BUG: Removed import nose on top of testing.py script