https://yu-gi-oh.jp/index.php?page=details&id=713

close #2197

use std::wstring and std::unordered_map directly

https://www.yugioh-card.com/en/limited/Jul_2019.html

* use standard thread library
* use standard sleep function

as long as the card name is different

移除-->取除

This reverts commit 8d586161.

although these two have the same value

server will stop when host player leaves the game

* do not need stop server at duel end process

* update tag_duel.cpp

* add duel stage

* fix

* fix