加入一个小操作：
选中一个碎片时，按鼠标右键即可旋转碎片，这样不用键盘，单手也可愉快的进行游戏。
Add a small operation:
When a piece is selected, press the right mouse button to rotate the pieces, so that you can play the game happily with one hand without using the keyboard.
Changed files in this update