Merge pull request !7872 from peixu_ren/custom_pp_ops

Merge pull request !7696 from peixu_ren/custom_gpu

Merge pull request !7841 from zhouyuanshen/ACosGrad_and_AsinGrad

Merge pull request !7879 from zhouyuanshen/asin_acos_fp16

Merge pull request !7826 from linqingke/gpu_ops

Merge pull request !7735 from baihuawei/fixmultinomial

Merge pull request !7767 from VectorSL/readme

Merge pull request !7722 from yanzhenxiang2020/incubator_to_open

Merge pull request !7786 from JonathanY/ops_oct

Merge pull request !7736 from danishnxt/MirrorPadRework

Merge pull request !7611 from danishnxt/newMaster

Merge pull request !7525 from baihuawei/cpu_type_exception

Merge pull request !7670 from linqingke/gpu_ops

lintIssues

convert long -> int64

correcting int64 -> int64_t

lint

Merge pull request !7529 from zhuxiaochen/1020_allsimplify_1.0

linting errors fix

comments cleanup

typo fix in doc

added more tests, fixed some formatting

changed expected dx values for linter

pylint const data fix

Merge pull request !7483 from 34bunny/GPU-ucs

Merge pull request !7537 from Peilin/cbg-new-gpu-ops-repeat_elements

fixed ci

fixed ci

addressed comments

Merge pull request !7482 from JonathanY/roialign_zero

Merge pull request !7548 from zhouyuanshen/master

Merge pull request !7478 from caifubi/dynamic_shape

Merge pull request !7545 from VectorSL/int64

Merge pull request !7440 from lingyunli63/GraphKernelCSE

Merge pull request !7173 from wanyiming/support_1d_matmul

Merge pull request !7236 from gengfei/1012_simplify_1.0