Make BaseLibrary members protected instead of private.

Signed-off-by: Deukhoofd <Deukhoofd@gmail.com>

src/Library/BaseLibrary.hpp

@@ -13,6 +13,7 @@
 
 namespace CreatureLib::Library {
     template <class T> class BaseLibrary {
+    protected:
         ArbUt::Dictionary<uint32_t, std::unique_ptr<const T>> _values;
         ArbUt::List<uint32_t> _listValues;
         size_t _index;