* add configuration options
e.g. python tools/main.py --c configs/stylegan_v2_256_ffhq.yaml -o total_iters=1 log_config.visiual_interval=1

* add stargan-v2 test and train code

* code normalization

* modify FAN code

* add munch in requirements.txt

* fix 2.0-beta bugs

* update pretreained path

* add extract_weight.py

* add stylegan model

* add wav2lip trainning code

* fix some bugs

* update configs

* add lesrcnn model

* add esrgan model, refine codes

* Integrate with visualdl
* visualdl: add doc and control paramter
* visual dl: move import, add install doc

* add ugatit model

* refine codes docs

* fix pix2pix to_tensor

* fix apps

* update demo

* refine code

* test

* fix apps

* update readme

* rm unused code

* fix apps output when input is image

* clean code

* update requirements.txt