100% test coveragecoverage

Fixes #9

Two potentially important changes:

- Removed unused code in the tests/ package. If other packages were
  using it, they will need updates. (They shouldn't be, but that's
  happened before.)
- Changed TraversableModuleImporter to catch ImportError instead of
  KeyError. There's no way the underlying SimpleModuleImporter can
  raise a KeyError anymore. I think this is the desired semantic but I
  am not 100% sure.

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 0476758..90869b2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ basepython =
     python2.7
 commands =
     coverage run -m zope.testrunner --test-path=src []
-    coverage report --fail-under=88
+    coverage report --fail-under=100
 deps =
     {[testenv]deps}
     coverage