++++++++++++++++++
* The reader now supports pure Python file and memory modes. If you are not
using the C extension and your Python does not provide the ``mmap`` module,
the file mode will be used by default. You can explicitly set the mode using
the ``mode`` keyword argument with the ``MODE_AUTO``, ``MODE_MMAP``,
``MODE_MMAP_EXT``, ``MODE_FILE``, and ``MODE_MEMORY`` constants exported by
``geoip2.database``.