Added support for images whose last dimension is odd. This is more expensive computationally, and it costs more in memory, but it's optional.

Fixed some typos and a dimension that was probably wrong. This doesn't solve the issue with the boder_mode='full' because we still have other errors.

This comes from Sander Dieleman <sanderdieleman@gmail.com> (@benanne
on github).

Fixup, small doc update.

Fix deepcopy of shared variable due to a Numpy problem.

Refactored sparse matrices comparison tests

Also fix the test.

fixed a few typos and removed unnecessary code.

The fix is taken from debugmode.

Minor fix to make pickle example more accurate.

Added comparisons operators for sparse matrices

Issue1780

Faster test