tox: Update astroid to 1.4.2 and pylint to 1.5.2.

qutebrowser/utils/utils.py

@@ -73,6 +73,7 @@ def read_file(filename, binary=False):
     Return:
         The file contents as string.
     """
+    # pylint: disable=assignment-from-no-return
     if hasattr(sys, 'frozen'):
         # cx_Freeze doesn't support pkg_resources :(
         fn = os.path.join(os.path.dirname(sys.executable), filename)

tox.ini

@@ -105,8 +105,8 @@ passenv =
 deps =
     {[testenv]deps}
     {[testenv:misc]deps}
-    astroid==1.4.1
-    pylint==1.5.1
+    astroid==1.4.2
+    pylint==1.5.2
     requests==2.9.0
 commands =
     {envpython} scripts/link_pyqt.py --tox {envdir}