New features
------------

* <news item>

Deprecations
------------

* The default mode for opening files is now 'r' (read-only).
  See :ref:`file_open` for other possible modes if you need to write to a file.

Exposing HDF5 functions
-----------------------

* <news item>

Bug fixes
---------

* <news item>

Building h5py
-------------

* <news item>

Development
-----------

* <news item>

Add news entry for default file mode change
Add news entry for default file mode change
