Update preprocessor

- Switch from ECJ to IDEA (with potential for kotlin)
- Can pull SRG mappings from FG, reducing amount of manual mappings (basically just class mappings and fixing errors in SRG mappings)

src/main/java/com/replaymod/core/versions/MCVer.java

@@ -608,9 +608,6 @@ public class MCVer {
     //#endif
 
     //#if MC>=11300
-    public static void color(float r, float g, float b, float a) { GlStateManager.color4f(r, g, b, a); }
-    public static void enableAlpha() { GlStateManager.enableAlphaTest(); }
-
     @SuppressWarnings("unused")
     public static abstract class Keyboard {
         public static final int KEY_LCONTROL = GLFW.GLFW_KEY_LEFT_CONTROL;

src/main/java/com/replaymod/recording/gui/GuiRecordingOverlay.java

@@ -21,10 +21,7 @@ import de.johni0702.minecraft.gui.versions.callbacks.PostRenderHudCallback;
 import static com.replaymod.core.ReplayMod.TEXTURE;
 import static com.replaymod.core.ReplayMod.TEXTURE_SIZE;
 import static com.replaymod.core.versions.MCVer.*;
-
-//#if MC<11300
-//$$ import static net.minecraft.client.renderer.GlStateManager.*;
-//#endif
+import static com.mojang.blaze3d.platform.GlStateManager.*;
 
 /**
  * Renders overlay during recording.
@@ -57,7 +54,7 @@ public class GuiRecordingOverlay extends EventRegistrations {
             String text = guiControls.isPaused() ? I18n.translate("replaymod.gui.paused") : I18n.translate("replaymod.gui.recording");
             fontRenderer.draw(text.toUpperCase(), 30, 18 - (fontRenderer.fontHeight / 2), 0xffffffff);
             bindTexture(TEXTURE);
-            enableAlpha();
+            enableAlphaTest();
             GuiRenderer renderer = new MinecraftGuiRenderer(MCVer.newScaledResolution(mc));
             renderer.drawTexturedRect(10, 10, 58, 20, 16, 16, 16, 16, TEXTURE_SIZE, TEXTURE_SIZE);
         }