VMATBase _median_profiles function returning mean profiles

[keithoffer]

I'm unsure if I'm reading things incorrectly, but in the VMATBase class (used for DRMLC and DRGS analysis), as far as I can tell, the _median_profiles() method is actually returning mean profiles. In particular, this line calls np.mean on the images, not np.median which is what I'd expect. However going back through the history, it looks like it's always been like this?