[ci skip] Create FIXED_UPSTREAM_ISSUES.md

Author: HaHaWTH

FIXED_UPSTREAM_ISSUES.md

@@ -0,0 +1,15 @@
+## Fixed upstream issues
+
+### Modpacks
+
+- Cannot launch MC Eternal[(CatServer#904)](https://github.com/Luohuayu/CatServer/issues/904)
+
+### Forge-Bukkit
+
+- Some mod explosions cannot be handled by Bukkit plugins(e.g. Tinkers' Construct EFLN)
+
+### Mods
+
+- Simple Difficulty(And any other similar mods) thirst is not getting reset on player respawn[(Luohuayu/CatServer#536)](https://github.com/Luohuayu/CatServer/issues/536)[(MohistMC/Mohist#2905)](https://github.com/MohistMC/Mohist/issues/2905)
+
+**All fixes have been contributed to the upstream project.**

README.md

@@ -12,6 +12,8 @@ CatRoom is a Cleanroom+Bukkit+Spigot server software forked from [CatServer](htt
 - Make use of modern Java features
 - Optimized plugin performance
 
+For all fixes, see [fixed upstream issues](FIXED_UPSTREAM_ISSUES.md)
+
 ## Components:
 
 - Minecraft Coder Pack