Merge pull request !116 from zjun/master

Signed-off-by: leonwanghui <leon.wanghui@huawei.com>

Merge pull request !115 from yangzhenzhang/expand-dim

Merge pull request !106 from amongo/SupportPythonOperators

Merge pull request !127 from wangqiuliang/fix-ge-me-compile

Merge pull request !11 from WeibiaoYu/fix-mem-problem

Merge pull request !123 from changzherui/modify_runtest_python_ut

Merge pull request !10 from zhangzheng/SparseApplyFtrlD

Merge pull request !22 from xiefangqi/remove_st_useless_import

Merge pull request !107 from zhaoting/add-YOLOv3-infer-scipt-and-change-dataset-to-MindRecord

Merge pull request !98 from ghzl/ge-exec-EnableDump-change-to-str

Merge pull request !117 from jjfeing/master

Merge pull request !2 from mxm/for_adapting_tbe

Merge pull request !114 from 万万没想到/merge_from_r0.1

Merge pull request !109 from leonwanghui/typo-fix

fix pylint

use scalar_lt primitive directly

fix review

Merge pull request !85 from YuJianfeng/master

Merge pull request !94 from yanzhenxiang2020/fix_mindrecord_ut_long_time

Merge pull request !110 from pengyanjun/fix_dataset_parameter_check_problem

Merge pull request !108 from ms_yan/feed_mode

Merge pull request !91 from chentingting/allreduce_fusion_resnet

Merge pull request !105 from lichen/register_not_equal_distributed_op

Merge pull request !71 from zhangzheng/sparse_acosh_floormod

Merge pull request !28 from geekun/master

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

2. delete default value of stat
3. delete examples
4. some comments error from wangting review
5. modify comments from jinyaohui
6. modify examples from wanghao
7. modify Select operation examples

Merge pull request !96 from lichen/fix_ref_key_bug_for_auto_parallel