Merge pull request !5748 from wangmin0104/master

Merge pull request !5704 from limingqi107/master

Merge pull request !5747 from zhaozhenlong/lite/op/issue/one_hot_result

Merge pull request !5700 from yao_yf/mirrot_mean_to_gradients_mean

Merge pull request !5127 from hwjiaorui/master

Merge pull request !5746 from chenzupeng/master-lite

Merge pull request !5759 from pengyongrong/op_format_toNC4HW4

Merge pull request !5744 from wangzhe/master

Merge pull request !5757 from hangq/master

2. fix nan bug

Merge pull request !5667 from zyli2020/code_refactor

Merge pull request !5745 from danishnxt/GPU_two

Merge pull request !5717 from linqingke/fasterrcnn

Merge pull request !4872 from TinaMengtingZhang/cpp-api-tfrecord-dataset

Merge pull request !5743 from pengyongrong/op_format_toNC4HW4

Merge pull request !5703 from zhaodezan/master

Merge pull request !5721 from shenwei41/sw_master

Merge pull request !5730 from kisnwang/async-run-graph

Merge pull request !5696 from Xiaoda/20-moving-multi-graph-interface-internal

Merge pull request !5729 from lichen/add_batchnormex_op

Merge pull request !5742 from hangq/master

Merge pull request !5740 from chenweifeng/gpu-momentum-fusion

Merge pull request !5732 from yepei6/mobilenetv2_finetune

Merge pull request !5697 from wangchangkai/master

Merge pull request !5733 from peixu_ren/custom_pp_ops

Merge pull request !5728 from wukesong/modify_init

Merge pull request !5734 from fary86/fix_adam_opt_bug

2. remove version string in build_aar.sh