speech bubbles and delays

maps/start.toml

@@ -107,6 +107,7 @@ greeter = """
 fn init() {
     log(`hello from object — player at ${Board.player_x}, ${Board.player_y}`);
     set_tile(2);   // change my glyph to ☻ — proves the write path
+    say("Hello there, traveller!");
 }
 """
 
@@ -123,5 +124,6 @@ fn tick(dt) {
 // or -1 for the player.
 fn bump(id) {
     log(`mover bumped by ${id}`);
+    say("Ow!");
 }
 """