Merge pull request !4149 from h.farahat/to_device_bug

Merge pull request !4146 from sunsuodong/leaky_relu

Merge pull request !4140 from liuwenhao/master

Merge pull request !4148 from fuzhiye/tmp

Merge pull request !4106 from yeyunpeng2020/master_kchw

Merge pull request !4139 from pengyongrong/concat_debug_pr

Merge pull request !4041 from chengxb7532/master

Merge pull request !4145 from 张学同/to_merge

Merge pull request !4112 from fuzhiye/tmp

2. add fp32 data type cast op register

Merge pull request !3932 from zhangzheng/open

Merge pull request !3963 from lyvette/tflite_parser

Merge pull request !4133 from zhanyuan/tmp

Merge pull request !4119 from sunsuodong/relu6_int8_

Merge pull request !3696 from Giancarlo/update_adjust_allreduce

folder location

Merge pull request !4141 from 王东旭/add_conv_testcase_codegen

Merge pull request !4138 from liuchao/arith_image

Merge pull request !4083 from EricZ/header_fix

Merge pull request !4025 from tony_liu2/alt

split into datasets

review fix

fix merge issues

fixed minddata lite build issues

Fixed issues

Merge pull request !4078 from 章一智/minddata-lite-build-fix

Merge pull request !4135 from chenzhongming/new_master

Merge pull request !3695 from nhussain/pybind_inheritance

Merge pull request !4132 from chenzupeng/master-lite

Merge pull request !3346 from lixiachen/repeat_rework