Make Nature a trait

src/dynamic_data/models/pokemon.rs

@@ -77,7 +77,7 @@ pub struct Pokemon {
     /// The [effort values](https://bulbapedia.bulbagarden.net/wiki/Effort_values) of the Pokemon.
     effort_values: ClampedStatisticSet<u8, 0, 252>,
     /// The [nature](https://bulbapedia.bulbagarden.net/wiki/Nature) of the Pokemon.
-    nature: Arc<Nature>,
+    nature: Arc<dyn Nature>,
 
     /// An optional nickname of the Pokemon.
     nickname: Option<String>,
@@ -443,7 +443,7 @@ impl Pokemon {
     }
 
     /// The [nature](https://bulbapedia.bulbagarden.net/wiki/Nature) of the Pokemon.
-    pub fn nature(&self) -> &Arc<Nature> {
+    pub fn nature(&self) -> &Arc<dyn Nature> {
         &self.nature
     }