Begin renaming some test files so it's easier to test Moose

diff --git a/t/lib/Anti/MouseError.pm b/t/lib/Anti/Error.pm
similarity index 100%
rename from t/lib/Anti/MouseError.pm
rename to t/lib/Anti/Error.pm

diff --git a/t/lib/Anti/Mouse.pm b/t/lib/Anti/Unsweetened.pm
similarity index 100%
rename from t/lib/Anti/Mouse.pm
rename to t/lib/Anti/Unsweetened.pm