Update VERBOSE in the tests

Previous commit make VERBOSE private, but the tests were still
monkey-patching the old name.
Merge pull request #34 from nirs/update-tests

Update VERBOSE in the tests
Do not require Python 3.4 for check target

Requiring Python 3.4 means that developers cannot run "tox -e check"
locally, since Python 3.4 may not be available. For example, on Fedora
20 we have Python 3.3.
Merge pull request #36 from nirs/check-python

Do not require Python 3.4 for check target
Make ALL_SIGNALS private

It is not documneted and it does not make sense that manhole will
provide this interface.
Update ignores.
Merge remote-tracking branch 'origin/master' into way-less-globals