* Revise reference implementation for ReduceMin operation
* Refactor backend unit tests
* Move tests with zero dims to op_eval
* Fix code style
* Added minor changes
* Replace CoordinateTransform for CoordinateTransformBasic
* Added constant expression to set keep_dims as false
* Add const qualifier to local variables
* Use host tensor to retrieve and normalize axes
* Re-arrange unit tests in manifest
Gabriele Galiero Casay
8c68f8b43c