Update README.md

Author: PkuRainBow

README.md

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 ## News
 
+- 2021/02/05 Support pytorch-1.7, mixed-precision, and distributed training. We also will add more segmentation models that achieve better performance based on the paddlepaddle image pretrained weights.
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 - 2020/08/16 [MMSegmentation](https://github.com/open-mmlab/mmsegmentation) has supported our HRNet + OCR.
 
 - 2020/07/20 The researchers from AInnovation have achieved **Rank#1** on [ADE20K Leaderboard](http://sceneparsing.csail.mit.edu/) via training our HRNet + OCR with a semi-supervised learning scheme. More details are in their [Technical Report](https://arxiv.org/pdf/2007.10591.pdf).