Merge pull request !1407 from zhangbuxue/support_mixed_tensor_for_tensor_get_item_and_tensor_set_item

Merge pull request !1383 from amongo/KeepPrimAttrInCNode

resolve review

modify infer to get abstract value and attr value map together

support get attr in specialize

clone primitive when specialize if attribute is not the same with
infered attribute

Merge pull request !1414 from zhaozhenlong/fix-issues-reshape-replace-flattern-grad

add some unittest for summary operator

support ScalarSummary to record number type

Merge pull request !1363 from zhangbuxue/Not_support_mixed_tensor_as_index_for_tensor_getitem_and_setitem

Merge pull request !1320 from JichenZhao/applyrms_squaresumall_cumprod_reduceprod

Merge pull request !1133 from zhangbuxue/support_tensor_get_value_by_tensor_index

support tensor set value by tensor index

Merge pull request !1302 from lihongkang/master

Merge pull request !1312 from jiangjinsheng/vm_erfc

Merge pull request !1282 from jiangjinsheng/vm_prelu

Merge pull request !1228 from liuxiao/UnsortedSegmentMin

Merge pull request !1129 from zhaozhenlong/op/bounding-box-encoder

Merge pull request !1203 from changzherui/code516

Merge pull request !1195 from jiangjinsheng/issue_geswitch

iou

NMSWithMask

larsupdate testcase

sgd testcase

Merge pull request !1094 from zhouneng/add_vm_support_l2normalize

Merge pull request !683 from xychow/bypass-renorm-and-specialize-hypermap-parameter

Merge pull request !1062 from liuxiao/softplus-softplusgrad