Separated rendering from MapTile, removed separate cave logic (integrated in rendering) and temporarily removed/disabled zoom-rendering.

src/main/java/org/dynmap/render/CombinedTileRenderer.java

@@ -0,0 +1,18 @@
+package org.dynmap.render;
+
+import org.dynmap.MapTile;
+
+public class CombinedTileRenderer implements MapTileRenderer {
+	private MapTileRenderer[] renderers;
+	
+	public CombinedTileRenderer(MapTileRenderer[] renderers) {
+		this.renderers = renderers;
+	}
+	@Override
+	public void render(MapTile tile) {
+		for(MapTileRenderer renderer : renderers) {
+			renderer.render(tile);
+		}
+	}
+
+}