small doc fix: add missing import and fix duplicate anchor name

Fix crash with GpuGemm.

Fixed typo in custom pickler

Fix crashes in the gpuarray test suite.

Keep the lock when we check the key

Fix problems with advsub in the gpuarray backend

Prod opts [WIP]

fix crash in debugmode

Add new scalar and elemwise op erfcx

Try to fix autodoc generation

This fixes generation of the PDF version

Update some GPU tests

first commit to Make equal_computations more efficient

Update printing and plotting sections in tutorials

Fix scan test for float64

Fix crash in Alloc grad

Fp16 merge

Lstm fixes