YOLOX 0.3.0 version

Updates notes

【2022/04/22】

Features

• support loading YOLOX model through torch.hub [#1189]
• support just-in-time compile op [#1241]
• support wandb logger [#1144]
• support freeze function for torch module [#1156]
• support showing YOLOX demo in a live window [#1138]
• support custom dataset for evaluator [#1131]
• add option for decode output in export_onnx [#1113]
• add HuggingFace web demo, click link here [#1184]
• add pre-commit [#1263]
• add get_trainer method in Exp class [#1263]

For pip users

:::pip install yolox``` could help you to install yolox for most platform.
For windows users, yolox will compile self-defined operator in YOLOX package just-in-time. Otherwise, yolox will compile operator during installation automatically.

### Thanks
Contributors (sort by timestamp of commit)
@woowonjin  @robin-maillot  @wico-silva
@AaronNZH  @nemonameless  @ArMaxik 
@joakimeriksson  @shenyi0220  @manangoel99 
@wep21 @futabato  @AK391 
@DoubleChuang  @Ar-Ray-code @PieroMacaluso 
@Joe0120  @Yulv-git