Implement async data/subData.  Implement TriangleMeshBuilder in SimpleMesh which replaces TriangleMesh.  Update Film to use new builder.
diff --git a/spec.h b/spec.h
index ba802f7..82650a7 100644
--- a/spec.h
+++ b/spec.h
@@ -24,6 +24,8 @@
 typedef struct {
   char name[256];
   int sync;
+  int handcodeApi;
+  int handcodePlay;
   int paramCount;
   VarType ret;
   VarType params[16];