dyhkwong：没有支持 finalmask 的计划，KCP 与 Hysteria 2 部分功能除外
作者原文@dyhkwongI explicitly made configurations with finalmask fails to import because there is no plan to support the huge mess of finalmask, and a configuration with finalmask enabled is imcompatible with the same configuration without finalmask enabled. Exceptions:
- For KCP (they moved part of KCP to finalmask).
- For Hysteria 2 obfuscation and port hopping.