MidnightLib v0.2.2 - Update to 1.17-pre1

- Not much changed.
- Rough ModMenu port for 1.17-pre1 can be found here: https://github.com/Motschen/ModMenu/releases/tag/v2.0.0-mnd

src/main/resources/midnightcore.mixins.json

@@ -1,7 +1,7 @@
 {
   "required": true,
   "package": "eu.midnightdust.core.mixin",
-  "compatibilityLevel": "JAVA_8",
+  "compatibilityLevel": "JAVA_16",
   "client": [
     "MixinOptionsScreen"
   ],