ENH: use pyglet 1.2 for testing on travis

- easy switch to test using pyglet 1.1.4 (comment out lines in .travis.yml)

.travis.yml

@@ -15,7 +15,13 @@ before_install:
   - travis_retry sudo apt-get update -qq
   - sudo apt-cache policy           # What is actually available?
   - travis_retry sudo apt-get install -qq xvfb xauth libgl1-mesa-dri
-  - travis_retry sudo apt-get install -qq python-pyglet python-pygame python-opengl
+  - travis_retry sudo apt-get install -qq python-pygame python-opengl
+# pyglet 1.1.4:
+#  - travis_retry sudo apt-get install -qq python-pyglet
+# pyglet 1.2.1: needs a patch, use perl to edit the file in-place:
+  - travis_retry sudo pip install -qq pyglet
+  - sudo perl -pi -e 's/popitem\(last=False\)\.dispose/popitem\(last=False\)\[1\]\.dispose/' /usr/local/lib/python2.7/dist-packages/pyglet/font/fontconfig.py
+  - python -c 'import pyglet; print pyglet.version'
   - travis_retry sudo pip install -qq gevent # Don't use apt-get (too old version of gevent)
   - travis_retry sudo apt-get install -qq python-yaml python-xlib
   - travis_retry sudo pip install -qq psutil # Don't use apt-get (too old version of psutil)