Work on order independent structs + cleanup

structs.kl

@@ -1,6 +1,22 @@
 
+arena_pointer: *Arena = null
 Arena :: struct
+//  next: *Arena
   data: *int
   len : int
   cap : int
 
+string16: Str16
+
+String16 :: struct
+  data: *void
+  len : int
+
+thing: Arena
+no_type := thing
+with_type: Arena = thing
+pointer := &with_type
+deref := *pointer
+
+
+Str16 :: String16