* add json lib 2.1.1

* turn off clang-format for json lib

* add unit test file

* add code to poison the use of ngraph.hpp from within the ngraph library

* ParameterizedTensorView and ElementType cleanup

* change element to_type() to from()

CPU: Define ownerships and lifetimes for all entities

compute temporary memory pool size per function

Bob/simple function call

Bob/bool

Clang cuda example from:
https://gist.github.com/anonymous/855e277884eb6b388cd2f00d956c2fd4

Reused from Caffe 2 (Apache Licensed)

[Link](https://github.com/caffe2/caffe2/blob/master/cmake/Modules/FindCuDNN.cmake)

Toggle with -DUSE_CUDA=True flag

Bob/pch

CPU: Fix float32 literal emission

Bob/constant