update-helper：Composer插件会在更新时发出警告，建议迁移过程

更新助手 允许您向库用户显示更新/升级说明。 用法 ... " require " : { " kylekatarnls/update-helper " : " ^1 " }, " require-dev " : { " composer/composer " : " ^1.2 " , }, " extra " : { " update-helper " : " MyNamesapace \\ MyUpdateHelper " }, " scripts " : { " post-autoload-dump " : [ " UpdateHelper \\ UpdateHelper::check " ] }, ... namespace MyNamesapace ; use UpdateHelper \ UpdateHelper ; u