Initial support for PyTorch1.5.1 .

Updated dependencies：

• NumPy 1.15.4 =>1.18.2
• Pillow 5.2.0=>6.2.2
• TensorFlow 1.13.1 =>1.15.2
• Keras 2.2.4 =>2.2.5
• MXNet 1.2.0 =>1.6.0
• CNTK 2.6 =>2.7
• SciPy==1.4.1
• Scikit-image==0.16.2

Bug Fixed and Improvement:

• Fix op [LRN]
• Fix tensorflow_parser[Slice], [DepthwiseConv2dNative]
• Fix caffe_emitter[Relu6]
• Add op [Unpool]
• Add keras [Affine]
• Add tensorflow [AddV2], [FusedBatchNormV3]
• Stability improvements.

Tips:

We recommand Python 3.6 since Python 2 has retired. If you experience incompatibility with other Python 3.x versions, please submit an issue.

Updated dependencies:

Numpy 1.14.5 => 1.15.4
Tensorflow 1.9.0 => 1.13.1
Keras 2.1.6=>2.2.4
CoreML 0.8=> 2.1.0
Cntk 2.5.1=>2.6
MXNet 1.1.0 post0 => 1.2.0
Onnx 1.2.1=>1.4.1
Onnx-tf =>1.2.1(python3), 1.1.2(python2)

Bug Fixes and Improvements:

• Fix Caffe constant emit
• Add visual studio solution file
• Add pytorch_emit [Prelu]
• Add tf_parser & pytorch_emit [Cast]
• Add keras_parser [Conv1DTranspose], [Conv2DTranspose], [Conv3DTranspose]

1. Initial implementation for RNN operators including GRU (Gated Recurrent Unit) cell, LSTM (Long Short-Term Memory) cell (no support for peephole yet) by matching the cell's corresponding pattern and fold them into a fuction or class in target framework.

2. Various fixes and stability improvements.

1. Support for for ssd and fastrcnn in tensorflow frozen parser.

2. Initial support for resnet-v2 , inception_resnet-v2 and facenet.

3. Add some ops which include Pack, Shape, Scale, StrideSlice, Prelu, Mul, Abs, Sub, Squeeze.

Formal release of CoreML parser and Caffe/Onnx/CoreML emitter. darknet parser initial release.

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