fix versions of test environments and Cython in tox.ini

Author: scoder

.hgignore

@@ -11,6 +11,7 @@ cython_debug/
 .gitrev
 .coverage
 funding.txt
+.tox
 *.orig
 *.rej
 *.dep

tox.ini

@@ -4,12 +4,12 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py26, py27, py30, py31, py32, py33
+envlist = py24, py25, py26, py27, py30, py31, py32, py33
 
 [testenv]
 commands =
     {envpython} setup.py clean
     {envpython} setup.py build_ext --inplace
     make test
 deps =
-    Cython>=0.14.1
+    Cython>=0.17.2