Tools to convert ONNX files (NCHW) to TensorFlow format (NHWC)

• MatMul
  • Improved stability of transformations when MatMul input tensor contains undefined dimensions in cases where onnxsim (shape_inference) fails.
• InstanceNormalization
  • Since the error between ONNX and TF in InstanceNormalization was originally large, the criteria for accuracy check was relaxed.
• common_functions (explicit_broadcast)
  • Fixed explicit_broadcast to skip subsequent processing if input_1 and input_2 have exactly the same shape from the beginning.
• CREStereo conversion from onnx to tensorflow failed #380

• Improved stability of MatMul, explicit_broadcast, and InstanceNormalization transformations by @PINTO0309 in https://github.com/PINTO0309/onnx2tf/pull/385

Full Changelog: https://github.com/PINTO0309/onnx2tf/compare/1.13.8...1.13.9