Merge pull request !4739 from lixian/master

Merge pull request !4709 from wangzhe/master

Merge pull request !4555 from wangshaocong/lite

Merge pull request !4722 from lijiaqi/modify_error_type

Merge pull request !4622 from hexia/http_init

Merge pull request !4731 from gukecai/parallel-genmask

Merge pull request !4710 from xiefangqi/xfq_fix_tfreader_issue

Merge pull request !4498 from heleiwang/gnn_distributed

Merge pull request !4637 from liuzhongkai/prelu

Merge pull request !4716 from zhaozhenlong/lite/issue/fix_fp16_transpose

Merge pull request !4726 from 徐永飞/master

Merge pull request !4684 from 治愈系潇洒哥/master

Merge pull request !4713 from wangchangkai/master

Merge pull request !4582 from wanyiming/mod_callback_serial

Merge pull request !4715 from zhoufeng/xiu-ba-ge

Merge pull request !4729 from zhaodezan/master

Merge pull request !4690 from baihuawei/categorical

Merge pull request !4719 from xychow/fix-copyright-in-core

Merge pull request !4413 from caozhou/merge_parameter

Merge pull request !4711 from lyvette/tflite_parser

Merge pull request !4607 from lyvette/master

Merge pull request !4723 from yangzhenzhang/concat-more-than-3-tensors

Merge pull request !4714 from chenzhongming/new_master

Merge pull request !4717 from byweng/fix_error

fix deconv bug

Merge pull request !4712 from peixu_ren/custom_pp_ops