fix pool and add avgpool test (PaddlePaddle#573)

* fix pool and add avgpool test

* add float64 support

Release/0.9 (PaddlePaddle#409)

* add nms plugin for openvino

* Update openvino_ppdet_cn.md

* update version to 0.9.0

Co-authored-by: jiangjiajun <jiangjiajun@baidu.com>

update op_lists.md

Support ppocr_mobile_det model of op11 (PaddlePaddle#272)

* fixed ppocr_det op11 has huge diff

* fixed some bugs

* fixed nearest bugs

* fixed nearest bugs

Support PaddleDetection 2.0 (PaddlePaddle#252)

* support ppyolo, ppyolo-tiny

* Support PaddleDetection 2.0 models

* fix name for greater than

* fix output_dim_idx constraint

Merge pull request PaddlePaddle#186 from Channingss/support_nlp

Support ERNIE of PaddleNLP

Merge pull request PaddlePaddle#145 from Channingss/exporter/v0.5.1

add op_mapper register function/support convert Paddle model(not combined)/add tutorial.ipynb/...

Merge pull request PaddlePaddle#129 from PaddlePaddle/jiangjiajun-pat…

…ch-1

Update README.md

Merge pull request PaddlePaddle#85 from cjt222/new

add test_sigmoid.py, test=develop

Merge pull request PaddlePaddle#70 from PaddlePaddle/wawltor-patch-1

Update README.md, add the onnx deps