actually (?!) fix drunk turtle problem

pkg/ludus.js

@@ -67,7 +67,7 @@ function io_poller () {
 }
 
 function start_io_polling () {
-  io_interval_id = setInterval(io_poller, 100)
+  io_interval_id = setInterval(io_poller, 10)
 }
 
 // runs a ludus script; does not return the result

src/world.rs

@@ -426,7 +426,7 @@ impl World {
     }
 
     async fn maybe_do_io(&mut self) {
-        if self.last_io + 100.0 < now() {
+        if self.last_io + 10.0 < now() {
             let outbox = self.flush_buffers();
             let inbox = do_io(outbox).await;
             self.fill_buffers(inbox);