Update 0.4.2 _2023.10.9

-The save system has been fixed and coins can be saved.

-修好了存档功能，金币可以存了

-Betting is now half of the total gold coins, so no matter how much money you have, you can turn your motorcycle into a bicycle .

-下注现在是直接下总金币的一半，所以钱再多也可以摩托变单车

-Added 2x speed and pause

-加了2倍速和暂停

-Fix bugs

-修复已知bug