Add util::flat_list::begin/end

libs/util/include/psemek/util/flat_list.hpp

@@ -46,6 +46,12 @@ namespace psemek::util
 			return reinterpret_cast<T *>(nodes_.get());
 		}
 
+		T * begin() { return data(); }
+		T const * begin() const { return data(); }
+
+		T * end() { return begin() + capacity(); }
+		T const * end() const { return begin() + capacity(); }
+
 		void reserve(std::size_t size);
 		void clear();