20230216 v2.0 Add function that respond to horizontal scrolling, with same operation as vertical; fix scrolling speed factor algorithm; modify scrolling speed with Ctrl key pressed to fixed speed. | 增加横向滚动响应,操作和纵向完全相同;修复滚动速度因子算法;修改按住Ctrl键时的滚动速度为固定速度。