Merge pull request !2338 from chenweifeng/nezha

Merge pull request !2355 from dengwentao/fix_sub_op

Merge pull request !2358 from YuJianfeng/proximal

Merge pull request !2361 from kisnwang/fix-codex-reviewbot

Merge pull request !2346 from wangcong/master

Merge pull request !2264 from liuxiao/Adapt-ApplyProximalAdagrad-operator-for-vm

Merge pull request !2315 from yanzhenxiang2020/add_pack_open

Merge pull request !2307 from baihuawei/cpulstm

Merge pull request !2285 from jjfeing/master

Merge pull request !2290 from yanzhenxiang2020/aicpu_param_open

Merge pull request !2281 from zyli2020/add_sigmoid

Merge pull request !2280 from chenjianping/host_reduce

Merge pull request !2246 from kisnwang/fix-cpu-argmax

Merge pull request !2265 from dengwentao/code_check

Merge pull request !2251 from YuJianfeng/proximal

Merge pull request !2222 from wangcong/master

Merge pull request !2150 from chenweifeng/tanh-fp16

Merge pull request !2229 from zyli2020/add_ftrl_op

Merge pull request !2226 from zyli2020/add_adam_op

Merge pull request !2235 from zyli2020/add_sigmoid_cross_entropy_with_logits_grad

Merge pull request !2234 from zyli2020/add_sigmoid_cross_entropy_with_logits

Merge pull request !2212 from dengwentao/embedding

Merge pull request !2200 from zjun/code_review

Merge pull request !2225 from VectorSL/shape-check

Merge pull request !2227 from jjfeing/master

Merge pull request !2069 from liuxiao/fix-input-value-check-for-SparseApplyFtrl-and-SparseApplyAdaGrad