float64 output)

It is now possible to overwrite the shared container's content by providing a
value as input. This is mostly to make the code simpler to write, understand,
and use, at the cost of a small risk of accidentally overwriting a container's
content.

Updated doc of Module since it was using some syntax for updates that does not seem supported anymore

Make a version of the code clean.
better test of dx,dy

set the mode in test_opt_unpack because testing an optimization makes no sense when the optimization is not applied

kernels. Modified the list of kernel and image shapes to test in test_conv.py so
that test_ConvOpGrad runs under 2 mins.