FastDA Release V0.0.18

The changes are listed as follows:

1. add default value for some control keys: max_iters, log_interval, val_interval, save_interval, max_save_num, cudnn_deter_flag
2. add "save_best_model" into control keys
3. raise runtimeerror when val_interval is larger than max_iters
4. allowing max_save_num=0 now

FastDA Release V0.0.17

1. add cuda.set_device(args.local_rank) thus card 0 will not have extra memory cost

FastDA Release V0.0.15

1. import HOOKS in hooks.init.py and hoos.training_hooks.py
2. register validation hooks early thus it make sense

FastDA Release V0.0.13

1. breaking changes: dataloader index start from 0 now, not 1 as before
2. you can register custom hooks now by write them in config. The figure of train_api is also updated.
3. using pop(key, None) syntax