Log Message:
Update groonga to 4.1.0.

News
====

.. _release-4-1-0:

Release 4.1.0 - 2015-01-09
--------------------------

It's a bug fix release of 4.0.9.

If you have already upgraded to 4.0.9, please upgrade to 4.1.0. And
re-create your all indexes. You can re-create your indexes by removing
and re-creating your indexes such as::

  column_remove TABLE INDEX_COLUMN
  column_create TABLE INDEX_COLUMN COLUMN_INDEX|...

.. seealso::

   * :doc:`/reference/commands/column_remove`
   * :doc:`/reference/commands/column_create`

.. note::

   If you didn't change your indexes by Groonga 4.0.9, you don't need
   to re-create your indexes. "change" means "add", \ 
"remove" and
   "update". If you use your indexes only for "search" by Groonga
   4.0.9, you don't need to re-create your indexes.

Fixes
^^^^^

* Fixed a bug that index may be broken. But the following bug fixed in
  Groonga 4.0.9 is re-appeared.

  * Fixed a crash bug that may be occurred by deleting or updating many
    indexed values at once.
    [groonga-dev,02942] [Reported by kashihara]