actor cleanup

source/transform.h

@@ -12,6 +12,7 @@ typedef struct transform {
   HMM_Mat4 cache;
   HMM_Mat4 gcache;
   int dirty;
+  JSValue self;
   struct transform *parent;
   JSValue jsparent;
   struct transform **children;
@@ -19,6 +20,8 @@ typedef struct transform {
   JSValue change_hook;
 } transform;
 
+void clean_all();
+
 transform *make_transform();
 void transform_free(JSRuntime *rt,transform *t);