feat: Get x_ite mostly working on VRML97 and later files

In addition, it checks for VRML 1.0 files and reports that it can't yet
  handle them. There are still some glitches, but the basic functionality
  is there.
  Resolves #9.

public/index.html

@@ -13,6 +13,9 @@
     <h2>WRL Files</h2>
     <ul><li> <a href="wrl_2.html">Target two</a></li>
       <li> <a href="wrl_modified.html">Target modified</a></li>
+      <li> <a href="wrl_1.html">Older target</a></li>
+      <li> <a href="wrl_older.html">Older modified</a></li>
+      <li> <a href="hartPoly.html">Hart polyhedron</a></li>
     </ul>
   </body>
 </html>