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
CLN: Added *.dta to the .gitignore. Fixed typo in comment.
CLN: Removed import after flake8 said it wasn't needed.
Merge pull request #4010 from snth/typos

CLN: Added *.dta to the .gitignore. Fixed typo in comment. Removed import.
BUG: (GH4032) Fixed insertion issue into DataFrame, after rename