Add Python 3.6 and drop Python 3.3py36

- Badges
- Enable coveralls
  - 100% coverage
- DRY with respect to dependencies in setup.py and tox.ini
- Remove _compat.py and use of its u() function since Python 3.2 is
  dropped.
- Run doctests on all python versions.

1 files changed, 3 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index 566fad1..e9ca612 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -9,3 +9,6 @@ where=src
 dev = develop easy_install zope.location[testing]
 docs = easy_install zope.location[docs]
 
+
+[bdist_wheel]
+universal = 1