Merge pull request !1176 from jiangjinsheng/issue_transpose

be optimized as it will generate different values each time.

Merge pull request !804 from huanghui/fix-confusionmulgrad-fusion-pass

Merge pull request !1195 from jiangjinsheng/issue_geswitch

Merge pull request !1172 from Chong/support_squeeze_and_reduce

Merge pull request !1199 from caifubi/fix-profiling-core-dump

Merge pull request !1100 from jinyaohui/context_opt_2

Merge pull request !1196 from ms_yan/concat_format

iou

NMSWithMask

larsupdate testcase

sgd testcase

Merge pull request !1184 from wangcong/master

Merge pull request !1138 from JoyLvliang/pynative-fix-topk-run-failed

kernel_graph from root func_graph

Merge pull request !1178 from zhouneng/add_vm_support_roialign

-replace switch'case by indexing

- Add test case
- Add constructors
- Add getItem string

- Fix bugs
- Add more tests

- Tensor iterator
- asNumpy
- TextFileDataset

- Tensor(Numpy)

- Super > 2D
- Add more test cases for GeneratorDataset

- Change StartAddr to GetBuffer and GetMutableNuffer

- Raise an error if batch is used with strings

Clean-up work

Merge pull request !1191 from ms_yan/map_column

Merge pull request !1061 from jiangzhiwen/dataset/flat_map

Merge pull request !1162 from lianliguang/using-device-dtype-to-create-transdata-kernel-build-info

Merge pull request !1120 from Kang/master

Merge pull request !1180 from YuJianfeng/master

Merge pull request !1145 from xychow/fix-env-getitem-poly

Merge pull request !1118 from huanghui/batchnormgrad-to-bninfergrad-pass

Merge pull request !1181 from yao_yf/fix_gather_v2_replace_graph

Merge pull request !1177 from panyifeng/fix_codex

Merge pull request !1157 from ms_yan/concat_dataset

Merge pull request !1126 from xiefangqi/voc_support_detection

Merge pull request !1175 from chenweifeng/layernorm

Merge pull request !1098 from huanghui/add-batchnorm-bninfer-pass

Merge pull request !1174 from ghzl/fix-beg-group-parameters

change to use __add__ operation instead ds.concat