Merge pull request !185 from jinyaohui/master

Merge pull request !177 from yao_yf/fix_auto_parallel_prelu

Merge pull request !99 from zhangbuxue/Dock_MaxPoolWithArgMax

Merge pull request !20 from jinyaohui/master

Merge pull request !153 from zhaozhenlong/cell/image_gradients

Merge pull request !122 from WeibiaoYu/master

Merge pull request !92 from fary86/add-prim-name-for-param-validator

Merge pull request !135 from penn/fix_free_morphism_error

Merge pull request !54 from ghzl/initializer-change-_Constant-to-Constant

Merge pull request !115 from yangzhenzhang/expand-dim

Merge pull request !106 from amongo/SupportPythonOperators

Merge pull request !123 from changzherui/modify_runtest_python_ut

fix pylint

use scalar_lt primitive directly

fix review

Merge pull request !94 from yanzhenxiang2020/fix_mindrecord_ut_long_time

Merge pull request !91 from chentingting/allreduce_fusion_resnet

Merge pull request !71 from zhangzheng/sparse_acosh_floormod

Merge pull request !52 from flywind/remove-ge-depend

Merge pull request !96 from lichen/fix_ref_key_bug_for_auto_parallel

Merge pull request !62 from amongo/SupportGradOnVarArgs

Merge pull request !69 from cathwong/ckw_dataset_py_ut1

use unpack graph primitive instead

add testcases for all grad interface

remove debug log

format code

remove dumpfuncgraph

resolve clang-format

resolve reviews

resolve cpplint

fix review

Merge pull request !74 from changzherui/master

Merge pull request !14 from zhaozhenlong/op/atan2

Merge pull request !76 from Xiaoda/modify-resnet50-strategy-checking

Merge pull request !64 from anzhengqi/fix-check-num-samples

Merge pull request !57 from yangzhenzhang/master