fixed caching bug and related issues

Yep


On Sat, Aug 2, 2014 at 3:00 PM, James A. Bednar <notifications@github.com>
wrote:

> In imagen/image.py:
>
> > @@ -327,8 +327,10 @@ def _process_channels(self,p,**params_to_override):
> >          orig_image = self._image
> >
> >          for i in range(len(self._channel_data)):
> > -            self._image = self._channel_data[i]
> > +            self._image = self._original_channel_data[i]  #self._channel_data[i]
>
> Presumably this comment should be deleted? It's confusing.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/ioam/imagen/pull/36/files#r15729167>.
>