Merge pull request !1916 from lilei/add_proximal_ada_grad_optimizer

Merge pull request !1873 from yanghaoran/master

Merge pull request !1874 from h.farahat/string_tensor_updates

Merge pull request !1945 from vlne-v1/I1JXUP-resnet50-thor-assign-fail

- Support accepting Numpy of str as input
- Support batching strings
- Core logic of batch&pad is static
- Make Pad a utility function

This reverts commit 705c71a257.

Merge pull request !1831 from ghzl/add-oder-parameters-in-group-functions

Merge pull request !1678 from jinyaohui/print

Merge pull request !1865 from JichenZhao/bnops_for_vm

Merge pull request !1826 from wangnan39/fix_lr_check_bug_in_adamweightdecay_dynamic_lr

Merge pull request !1853 from amongo/FixInitializer

Merge pull request !1774 from liyong126/mindrecord_padded_sample

Merge pull request !1615 from amongo/GetBoolValueFromConstantTensor

Merge pull request !1807 from ZiruiWu/ngram_dev

Merge pull request !1808 from Jamie/numsamples

* add infer_value for common math ops
* convert constant bool tensor to bool value

* do not infer value when encounter 0 as division

for while condition, do not unrool if condition is a tensor

Merge pull request !1823 from jiangjinsheng/vm_ConfusionMatrix

Merge pull request !1819 from zhangbuxue/restricting_modify_non-Parameter_class_members

updates

more update

more work

more fixin

post rebase updates

clang formatting

code review recovery

ci fixes

updates

update

update

update

Merge pull request !1806 from Tinazhang/random-crop-error-msg

Merge pull request !1804 from wangqiuliang/add-tensor-compare-len-consexpr-feature

Merge pull request !1713 from luoyang/pylint

Merge pull request !1769 from lichen/gatherv2_support_host_and_device

Merge pull request !1766 from vlne-v1/I1J0M0-amp-do-auto-cast-failed

Merge pull request !1697 from chenhaozhe/bert-optimization