fixes message log wrapping - sort of

it's an improvement - messages will wrap if the added fragment is longer than the maximum width, but it still causes issues if an *individual* fragment is longer than the width. the proper solution here, i think, is to get rid of the whole fragment system and just log words and newlines, and not have to bother with any of this.

src/main.rs

@@ -80,7 +80,7 @@ impl State {
         self.mapgen_timer = 0.0;
         self.mapgen_history.clear();
         let mut rng = self.ecs.write_resource::<rltk::RandomNumberGenerator>();
-        let mut builder = map_builders::level_builder(new_id, &mut rng, 80, 50);
+        let mut builder = map_builders::level_builder(new_id, &mut rng, 100, 50);
         builder.build_map(&mut rng);
         std::mem::drop(rng);
         self.mapgen_history = builder.build_data.history.clone();