feat: Handle IndexedLineSet

Also turns on PointSet but I don't have a good test case for that
  so not sure it is working.
  Resolves #16.

src/index.civet

@@ -138,9 +138,8 @@ function parse(stream: Lexer, tree: Tree = {}): Tree
                   dims := radius: ''
                   findNumbersAtTopLevel stream, dims
                   addShape 'Sphere', [`radius ${dims.radius}`], tree
-               /IndexedLineSet|PointSet/ // ignored, but why? They are in VRML97
-                  findNumbersAtTopLevel stream, {}
-               'IndexedFaceSet'
+               /IndexedFaceSet|IndexedLineSet|PointSet/
+                  isFaces := held.value is 'IndexedFaceSet'
                   contents := translatedToksUntilClose stream
                   params := []
                   if 'Coordinate' in tree
@@ -149,15 +148,15 @@ function parse(stream: Lexer, tree: Tree = {}): Tree
                   if 'Normal' in tree
                      params.push "normal Normal {\n",
                         ...tree.Normal, " }\n"
-                  if 'TextureCoordinate' in tree
+                  if isFaces and 'TextureCoordinate' in tree
                      params.push "texCoord TextureCoordinate {\n",
                         ...tree.TextureCoordinate, " }\n"
-                  if 'creaseAngle' in tree
+                  if isFaces and 'creaseAngle' in tree
                      params.push `creaseAngle ${tree.creaseAngle[0]}`
-                  if 'ccw' in tree
+                  if isFaces and 'ccw' in tree
                      params.push `ccw true`
                   params.push ...contents
-                  addShape 'IndexedFaceSet', params, tree
+                  addShape held.value, params, tree
                /Light$/
                   contents := toksUntilClose stream
                   addChild {[held.value]: contents}, tree