* rename directories to be consistent
* rename reference namespace to match directory

* make json lib an external project
* add env var to turn warnings to errors

* initial support for hybrid transformer

* add broadcast_vector_rowwise_reversed for hybrid test

* headerc

* get function placement fix

* conv ref test generator graph node in labmda fuction

* rename map_parameter_to_source_node

* type change map_parameter_to_source_node

* use interpreter for numerical derivative

* better comments

* wip

* wip

* remove get_vector from runtime::TensorView class as it was for unit test only

* cleanup

* move writting vector to runtime::TensorView to the unit test dir

* merge fix

* PR review change

* update from PR comment

* update changes file

* remove use of ParameterizedConstant from unit test. Now using Constant instead. Constant is not a templated class.

* move ParameterizedTensorView to NGVM directory

* element_type cleanup

* ParameterizedTensorView and ElementType cleanup

* change element to_type() to from()

* wip

* remove ndarray dependency from ParameterizedTensorView

* get rid of operator= on ParameterizedTensorView

* remove unimplemented ctor

* remove get_parameterized_tensor_view from TensorView class

* cleanup

* the patient will get worse before getting better. remove ParameterizedTensorView from element type

* cleanup obsolete includes

* remove unused file

* move aligned_buffer and cleanup

* cleanup

* wip

* wip

* wip

* cleanup

* cleanup

* wip

* finally got rid of getting a non-const vector from PTV

* wips

* wip

* remove unused

* fix PR comments