Non-tuple multidiminsional indexing deprecated.

[moorepants]

gaitanalysis.tests.test_gait.test_find_constant_speed ... /home/moorepants/miniconda3/envs/gaitanalysistoolkit-dev/lib/python2.7/site-packages/scipy/signal/_arraytools.py:45: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
  b = a[a_slice]