comparison to `None` warnings

[parejkoj]

I get the following errors with numpy 1.10.1:

/Users/parejkoj/sdss4/APO-github/PyGuide/build/lib.macosx-10.5-x86_64-2.7/PyGuide/Centroid.py:574: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  if mask != None:
/Users/parejkoj/sdss4/APO-github/PyGuide/build/lib.macosx-10.5-x86_64-2.7/PyGuide/Centroid.py:655: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  if mask == None:
/Users/parejkoj/sdss4/APO-github/PyGuide/build/lib.macosx-10.5-x86_64-2.7/PyGuide/Centroid.py:203: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  if val not in (None, ""):

There's probably others of these lurking in there. I think it's the same thing that was cleaned up from opscore.

[parejkoj]

Ah... I am running verison 2.2.1, and it looks like you've put some fixes in for this stuff into trunk. I'll try upgrading.

[parejkoj]

Ok, after doing "git pull", I now get different warnings:

/Users/parejkoj/sdss4/APO-github/PyGuide/build/lib.macosx-10.5-x86_64-2.7/PyGuide/Centroid.py:205: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  if val not in (None, ""):
/Users/parejkoj/sdss4/APO-github/PyGuide/build/lib.macosx-10.5-x86_64-2.7/PyGuide/Centroid.py:205: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison
  if val not in (None, ""):