Fix to verify_grad if the output of the grad is sparse, but not the input.
Better error message.
Add ConstructSparseFromList tests.
Add theano.sparse_grad interface.
New internal interface to the sparse grad of AdvancedSubtensor1
pep8
Add in the library doc the content of io.py
fix gh-1344. Scan opt error/warning.
Better doc of theano.sparse_grad
PEP8 and docstrings.
Made corrections, add missing methods and tests.
Delete old test.
Move TrueDot out of sandbox.
Document the difference between the different sparse dot variant.
Merge pull request #1449 from nouiz/mpi

Add documentaiton about the MPI and load ops
Merge pull request #1453 from nouiz/bouchnic-truedot

Bouchnic truedot rebase
update comment following code review.
Added comment.
Merge pull request #1448 from nouiz/adv_sub1_grad

Add theano.sparse_grad interface.
Merge pull request #1451 from nouiz/scan_1344

[WIP] fix gh-1344. Scan opt error/warning.