Merge pull request !1762 from zhangbuxue/support_convert_bool_scalar_and_tensor_to_number_tensor

Merge pull request !1685 from Xiaoda/fix-the-embeddinglookup-bug

Merge pull request !1750 from zhouneng/add_vm_support_for_expm1

Merge pull request !1415 from kisnwang/support-mix-target

Merge pull request !1695 from liuwenhao/master

Merge pull request !150 from yanzhenxiang2020/add_rnnt_and_categorical

Merge pull request !1682 from liuxiao/SparseApplyProximalAdagradD-SparseApplyFtrlD-ApplyProximalAdagradD

Merge pull request !1518 from zhouneng/add_vm_support_Atan_AtanGrad_Atanh

Merge pull request !1712 from yihuaijie/master

Merge pull request !1631 from yangjie159/fix_reviewbot_of_mem_reuse

Merge pull request !1696 from huanghui/TMP

Merge pull request !1528 from jiangjinsheng/vm_bessel

Merge pull request !1532 from jinyaohui/pylint1

Merge pull request !1692 from meixiaowei/master

Merge pull request !1501 from zhouneng/add_vm_support

Merge pull request !1666 from huanghui/AdamApplyOneWithDecay-fusion-pass

Merge pull request !1694 from YuJianfeng/master

Merge pull request !1638 from Peilin/splitOp-after-testing

Merge pull request !1703 from EricZ/master

Merge pull request !1704 from Peilin/fix-random-sampler-bug

Added broken test case for cv

Fixed error handling in sync_wait

Merge pull request !1544 from MahdiRahmaniHanzaki/I1IHNG-ten-crop

Merge pull request !1636 from Tinazhang/randomGray

add another test case

typo

merge conflict

another PR changed testing behavior, updated test cases in this commit

added input check for use_sampler

addressed code review comments

fixed pylint, not related to my changes

fixed edge case of rounding in getting split sizes

fix pylint