Merge pull request #2 from stackbuilders/fix-test-suite-in-dist

Fix test suite in distributable package by including the test module.

datetime-sb.cabal

@@ -34,6 +34,7 @@ test-suite test
   type: exitcode-stdio-1.0
   hs-source-dirs: test
   main-is: Suite.hs
+  other-modules: Data.DateTimeTest
   build-depends:
       datetime-sb