* Rename folder name in PaddleCV
* rename PaddleVideo to video
* rename PaddleGAN to gan
* rename Paddle3D to 3d_vision
* remove PaddleSlim

* Add PaddleDetection/release/0.2 as submodule

* Update link in models/README.md and models/PaddleCV/README.md

* sync_1.7

* update save

* sync 1.6

* sync 1.6

* update readme

* fix spade

* update SPADE

* update spade

* update infer

* update infer

* Revert "change PyReader to from_generator (#3490)"

This reverts commit d331b799.

* Update data_reader.py

* Update data_reader.py

* Update utility.py

* change PyReader to from_generator

* fluid.layers.data->fluid.data

* fix_bug

* fix_infer_pix2pixreader

* add SPADE