Allow client to auto build multiblocks (#12)

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureDefinition.java

@@ -324,7 +324,7 @@ public interface IStructureDefinition<T> {
             int basePositionC,
             boolean hintsOnly,
             Boolean checkBlocksIfNotNullForceCheckAllIfTrue) {
-        if (world.isRemote ^ hintsOnly) {
+        if (!world.isRemote && hintsOnly) {
             return false;
         }