Bumps version to 3.1.21 and updates Changelog

Changelog

@@ -45,6 +45,12 @@ new in Celery 3.1.
 
     Contributed by Sebastian Kalinowski.
 
+- **Utils**: The ``.discard(item)`` method of
+  :class:`~celery.datastructures.LimitedSet` did not actually remove the item
+  (Issue #3087).
+
+    Fix contributed by Dave Smith.
+
 - **Worker**: Node name formatting now emits less confusing error message
   for unmatched format keys (Issue #3016).
 

README.rst

@@ -4,7 +4,7 @@
 
 .. image:: http://cloud.github.com/downloads/celery/celery/celery_128.png
 
-:Version: 3.1.20 (Cipater)
+:Version: 3.1.21 (Cipater)
 :Web: http://celeryproject.org/
 :Download: http://pypi.python.org/pypi/celery/
 :Source: http://github.com/celery/celery/

celery/__init__.py

@@ -19,7 +19,7 @@ version_info_t = namedtuple(
 )
 
 SERIES = 'Cipater'
-VERSION = version_info_t(3, 1, 20, '', '')
+VERSION = version_info_t(3, 1, 21, '', '')
 __version__ = '{0.major}.{0.minor}.{0.micro}{0.releaselevel}'.format(VERSION)
 __author__ = 'Ask Solem'
 __contact__ = 'ask@celeryproject.org'

docs/includes/introduction.txt

@@ -1,4 +1,4 @@
-:Version: 3.1.20 (Cipater)
+:Version: 3.1.21 (Cipater)
 :Web: http://celeryproject.org/
 :Download: http://pypi.python.org/pypi/celery/
 :Source: http://github.com/celery/celery/