Restore Travis testing of Python 3.2/3.3
diff --git a/.travis.yml b/.travis.yml
index 7e7af91..cabf455 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -121,6 +121,16 @@
       dist: trusty
     - compiler: gcc
       os: linux
+      env: SWIGLANG=python PY3=3 VER=3.2
+      sudo: required
+      dist: trusty
+    - compiler: gcc
+      os: linux
+      env: SWIGLANG=python PY3=3 VER=3.3
+      sudo: required
+      dist: trusty
+    - compiler: gcc
+      os: linux
       env: SWIGLANG=python PY3=3 VER=3.4
       sudo: required
       dist: trusty