Update to 1.20

- Remove some devenv mods that are not updated yet
 - Replace lib39 with fletchingtable for automixins
 - Use non kotlin entrypoints
 - Make use of DrawContext in a bunch of places

src/main/java/moe/nea/firmament/init/MixinPlugin.java

@@ -18,25 +18,49 @@
 
 package moe.nea.firmament.init;
 
-import com.unascribed.lib39.core.api.AutoMixin;
+import org.objectweb.asm.tree.ClassNode;
+import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
+import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
 
 import java.util.List;
+import java.util.Set;
 
-// TODO: replace AutoMixin with KSP plugin?
-public class MixinPlugin extends AutoMixin {
+public class MixinPlugin implements IMixinConfigPlugin {
+
+    @Override
+    public void onLoad(String mixinPackage) {
+    }
+
+    @Override
+    public String getRefMapperConfig() {
+        return null;
+    }
 
     @Override
     public boolean shouldApplyMixin(String targetClassName, String mixinClassName) {
         if (!Boolean.getBoolean("firmament.debug") && mixinClassName.contains("devenv.")) {
             return false;
         }
-        return super.shouldApplyMixin(targetClassName, mixinClassName);
+        return true;
+    }
+
+    @Override
+    public void acceptTargets(Set<String> myTargets, Set<String> otherTargets) {
+
     }
 
     @Override
     public List<String> getMixins() {
-        var autoDiscoveredMixins = super.getMixins();
-        autoDiscoveredMixins.removeIf(it -> !shouldApplyMixin(null, it));
-        return autoDiscoveredMixins;
+        return null;
+    }
+
+    @Override
+    public void preApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+
+    }
+
+    @Override
+    public void postApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+
     }
 }