Clippy fixes and documentation

src/static_data/libraries/nature_library.rs

@@ -5,6 +5,7 @@ use anyhow_ext::{ensure, Result};
 use indexmap::IndexMap;
 use parking_lot::RwLock;
 use std::fmt::Debug;
+use std::ops::Deref;
 use std::sync::Arc;
 
 /// A library of all natures that can be used, stored by their names.
@@ -64,7 +65,7 @@ impl NatureLibrary for NatureLibraryImpl {
         for kv in read_lock.iter() {
             // As natures can't be copied, and should always be the same reference as the value
             // in the map, we just compare by reference.
-            if Arc::ptr_eq(&kv.1, nature) {
+            if kv.1.eq(nature.deref()) {
                 return Ok(kv.0.clone());
             }
         }