随机数产生小部件！
申请手续：长按主屏幕。选择小工具。选择随机数？尽情享受吧！
Last updated on 2019年02月15日
Added user input validation.
Now can select minimum and maximum values for random number generation!!! And small bug fix too.
Set widget to start size at normal icon size and can be enlarged from there.
Added app to input max range. Removed "Random" text from widget. Default max is 10, default min is 0.
TODO: Update to API 28 but breaks app/widget currently.
