Also, for the other parameter use float32 to use different dtype.

Also, with int32, make sure to draw the random value correctly. We where drawing only 0s.

Fix gh-2108

Older version of pydot, Edge was accepting the parameter label=''. Now
this cause bug.

Doc, error message

Update to be more consistent with doc.

Fix gh-2210, Join.grad crash with first input dtype being *int*

Documentation : error messages

Try to clarify

Typo + clarification

Update extending_theano tutorial

[BUG] Fix bug introduced yesterday, fix FFT conv optimization and small pydotprint fix.

Adding new superclass for C ops