Several fixes.

src/Battling/Battle/Battle.cpp

@@ -8,6 +8,8 @@ void PkmnLib::Battling::Battle::SetWeather(const ArbUt::StringView& name) {
     _eventHook.Trigger<WeatherChangeEvent>(name);
 }
 void PkmnLib::Battling::Battle::ClearWeather() {
+    if (_weatherScript == nullptr)
+        return;
     _weatherScript->OnRemove();
     _weatherScript = nullptr;
     _eventHook.Trigger<WeatherChangeEvent>(""_cnc);

src/Library/Items/ItemLibrary.hpp

@@ -17,10 +17,6 @@ namespace PkmnLib::Library {
             return CreatureLib::Library::ItemLibrary::Get(name).ForceAs<const Item>();
         }
         inline ArbUt::BorrowedPtr<const Item> operator[](const ArbUt::BasicStringView& name) const { return Get(name); }
-
-        void Insert(const ArbUt::StringView& name, const Item* item) {
-            CreatureLib::Library::ItemLibrary::Insert(name, item);
-        }
     };
 }
 

src/Library/Species/SpeciesLibrary.hpp

@@ -26,10 +26,6 @@ namespace PkmnLib::Library {
             return Get(name);
         }
 
-        void Insert(const ArbUt::StringView& name, const PokemonSpecies* species) {
-            CreatureLib::Library::SpeciesLibrary::Insert(name, species);
-        }
-
         ArbUt::BorrowedPtr<const PokemonSpecies>
         FindPreEvolution(const ArbUt::BorrowedPtr<const PokemonSpecies>& species) const noexcept;
     };