API backwards compatibility

gradle.properties

@@ -1,6 +1,6 @@
 aeversion=rv3
 aechannel=beta
-aebuild=46-GTNH
+aebuild=47-GTNH
 #KEEP V6 FOR MOD SUPPORT
 aegroup=appeng
 aebasename=appliedenergistics2

src/api/java/appeng/api/storage/ICellWorkbenchItem.java

@@ -71,11 +71,11 @@ public interface ICellWorkbenchItem
 	 * @param is cell item
 	 * @return current ore dictionary filter
 	 */
-	String getOreFilter(ItemStack is);
+	default String getOreFilter(ItemStack is){ return ""; }
 
 	/**
 	 * @param is cell item
 	 * @param filter new ore dictionary filter
 	 */
-	void setOreFilter(ItemStack is, String filter);
+	default void setOreFilter(ItemStack is, String filter) {}
 }