[pygobject] Created tag 3.21.91

[Christoph Reiter <creiter src gnome org>]

The signed tag '3.21.91' was created.

Tagger: Christoph Reiter <creiter src gnome org>
Date: Thu Aug 25 16:55:51 2016 +0200

    release 3.21.91

Changes since the last tag '3.21.0':

Christoph Reiter (10):
      Remove pygi.h and pygi-private.h
      Merge pyglib-private.h into pyglib.h
      Remove pygobject-private.h and rename pygobject.c to pygobject-object.c
      Remove pygobject-external.h
      Print exception if marshalling a signal argument fails
      tests: Use places kwarg for assertAlmostEqual
      Fix a test with Python 3.1/3.2
      Skip a test with older glib
      configure.ac: version bump to 3.21.91
      release 3.21.91

Marinus Schraal (1):
      overrides: allow treemodel sequence shorthands

Mathieu Bridon (1):
      Allow installing with pip

Simon Feltman (1):
      configure.ac: post-release version bump to 3.21.1