rename reorder to sortById

Signed-off-by: TZ <atian25@qq.com>
add get method to handler && add test

Signed-off-by: TZ <atian25@qq.com>
move getHandler to handler.get && add Rule doc

Signed-off-by: TZ <atian25@qq.com>
fixed call handler bug, missing rule && update version

Signed-off-by: TZ <atian25@qq.com>