Travis: Also test on Python 2.7.6

.travis.yml

@@ -11,6 +11,7 @@ env:
     PYTHONUNBUFFERED=yes
   matrix:
     - TOXENV=2.7
+    - TOXENV=2.7.6
     - TOXENV=3.4
     - TOXENV=3.5
     - TOXENV=pypy PYPY_VERSION="5.3"

tox.ini

@@ -6,7 +6,7 @@ deps=
     -r{toxinidir}/requirements/default.txt
     -r{toxinidir}/requirements/test.txt
 
-    2.7: -r{toxinidir}/requirements/test-ci-default.txt
+    2.7,2.7.6: -r{toxinidir}/requirements/test-ci-default.txt
     3.4,3.5: -r{toxinidir}/requirements/test-ci-default.txt
     pypy,pypy3: -r{toxinidir}/requirements/test-ci-base.txt
 
@@ -20,6 +20,7 @@ commands = pip install -U -r{toxinidir}/requirements/dev.txt
 
 basepython =
     2.7,flake8,flakeplus,apicheck,linkcheck,configcheck: python2.7
+    2.7.6: python2.7.6
     3.4: python3.4
     3.5: python3.5
     pypy: pypy