* update model save load

* first add

* update model save and load

* update train.py

* update LaneNet model saving and loading

* adapt slim to paddle-1.8

* update distillation save and load

* update nas model save and load

* update model load op

* update utils.py

* update load_model_utils.py

* update model saving and loading

* update copyright

* update palette.py

* fix color jitter bug

* modify usage.md

* modify data_aug.md

* improve data_aug doc and code

* data_aug.md

* usage.md

* data_aug.py

* Update data_aug.md

* Update data_aug.md

* Update data_aug.md

* Update data_aug.md

* Update check.md

* Update README.md

fix hsv_color_jitter bug