drop 2.6 and 3.2 due site libraries used with drops

Author: alex-eri

.travis.yml

@@ -1,9 +1,9 @@
 language: python
 python:
+  - "3.5"
+  - "3.4"
   - "3.3"
-  - "3.2"
   - "2.7"
-  - "2.6"
 install:
   # Install unittest2 on Python 2.6
   - if [[ $TRAVIS_PYTHON_VERSION == '2.6' ]]; then pip install --use-mirrors unittest2; fi