feat: add erase methods to ordered_map

include/toml11/ordered_map.hpp

@@ -189,6 +189,32 @@ class ordered_map : detail::ordered_map_ebo_container<Cmp>
         return iter->second;
     }
 
+    iterator erase(iterator pos)
+    {
+        return container_.erase(pos);
+    }
+    
+    iterator erase(const_iterator pos)
+    {
+        return container_.erase(pos);
+    }
+    
+    iterator erase(const_iterator first, const_iterator last)
+    {
+        return container_.erase(first, last);
+    }
+    
+    size_type erase(const key_type& key)
+    {
+        auto it = this->find(key);
+        if (it != this->end())
+        {
+            container_.erase(it);
+            return 1;
+        }
+        return 0;
+    }
+
     mapped_type& operator[](const key_type& k)
     {
         const auto iter = this->find(k);