versions: drop python 3.2 support

This change drops python 3.2 support as it makes life more
difficult with unicode, is not present in any major distribution,
and is not supported by other major packages such as pkg_resources:

    UserWarning: Support for Python 3.0-3.2 has been dropped.
    Future versions will fail here.

The versions of python referenced in the toxtest.sh script were
also updated.

Signed-off-by: Paul Osborne <osbpau@gmail.com>

Author: posborne

.travis.yml

@@ -5,7 +5,6 @@ language: python
 python: 3.5
 env:
   - TOX_ENV=py27
-  - TOX_ENV=py32
   - TOX_ENV=py33
   - TOX_ENV=py34
   - TOX_ENV=py35

toxtest.sh

@@ -9,9 +9,9 @@
 pyversions=(2.7.10
             3.3.5
             3.4.3
-            3.5.0
-            pypy-4.0.0
-            pypy3-2.4.0)
+            3.5.2
+            pypy-5.3.1
+            pypy3-5.2)
 
 # parse options
 for i in "$@"