Made conv2d_c01b PEP8 compliant
Fixed accidental override of earlier commit
First conv2d_c01b tests
Forgot to add file.
Added numerical test for conv2d_c01b
Merge remote-tracking branch 'upstream/master' into conv2d_c01b_tests
Added docstrings
Merge pull request #739 from bartvm/conv2d_c01b_tests

Conv2d c01b tests