支持自定义扩展候选栏样式，
--笔画筛选栏
candidate.expanded.filter_bar={
gravity="bottom",--left,top,right,bottom
show = true--设置为false隐藏
}
candidate.expanded.tool_bar={
gravity="right",--left,top,right,bottom
keys={"hide","page_up","page_down","char_filter","BackSpace"}
}
支持在键盘打开方案组菜单。
Schema_group = { label = "方案组", send = "SETTINGS", option = "group" },--添加select参数可以直接设置指定方案