Merge pull request !5399 from ZhangQinghua/master

Merge pull request !5367 from yangzhenzhang/check-parameter-split

Merge pull request !5358 from zhoufeng/ut-asan

Merge pull request !5351 from yao_yf/parallel_context_collation

Merge pull request !5426 from jianghui/master

Merge pull request !5420 from guozhijian/update_release_notes

Merge pull request !5408 from LiHongzhang/forkserver

Merge pull request !5413 from chengang/combine_grad

Merge pull request !5412 from 徐安越/master

Merge pull request !4957 from chenweifeng/lstm-readme

Merge pull request !5160 from huangbingjian/master

Merge pull request !5394 from huangbingjian/remove_h

Merge pull request !5402 from hewei/tensor_from_numpy

Merge pull request !5411 from songhonglei413/roi

Merge pull request !5214 from hanhuifeng/yolov3_gpu

Merge pull request !5375 from wandongdong/master

Merge pull request !5406 from luoyang/c-api

Merge pull request !5376 from xiaotianci/add

Merge pull request !5383 from vlne-v1/fix-compile-cost

Merge pull request !5243 from zhouyaqiang0/master

Merge pull request !5397 from panfengfeng/fix_googlenet_performance_master

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

Merge pull request !5361 from sunsuodong/fix_batchnorm_output_fp16

Merge pull request !5361 from sunsuodong/fix_batchnorm_output_fp16

Merge pull request !5371 from sunsuodong/fix_arithmetic2

2、add hub config for resnet
3、extend hccl time out of resnext50

Merge pull request !5175 from chenfei_mindspore/fix-readme

Merge pull request !5368 from yuchaojie/transformer_st

Merge pull request !5359 from fuzhiye/tmp

Merge pull request !5382 from chenjianping/lite_dev2

Merge pull request !5395 from chujinjin/fix_assign_memory_error_in_pynative

Merge pull request !5322 from baihuawei/categorical

Merge pull request !5329 from chentingting/fix_parser_bool