colorline warning

[mycarta]

Hi David

I just updated Anaconda this morning and I got this warning for the first time when using your colorline function:

_C:...\AppData\Local\Continuum\Anaconda2\lib\site-packages\matplotlib\collections.py:650: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison
if self._edgecolors_original != str('face'):
C:...\AppData\Local\Continuum\Anaconda2\lib\site-packages\matplotlib\collections.py:590: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison
if self.edgecolors == str('face'):