Update Model

1. Train and rpdate head detoction model

Translate, fix bugs, clean cache

1. Translate to 繁體中文
2. fix minor bugs
3. clean cache for app update

Auto update

enable auto-update in app

Bug Fixes and update layout

1. Update layout to adapt to more devices
2. Fix many bugs

First release

v4.0.0

update readme

Alarm with vision

add vision waking feature base on the original repo