Migrate to test::unit. Start moving functionality into HSMR Module and mixin to key and component models to reduce duplication.

Guardfile

@@ -0,0 +1,8 @@
+# A sample Guardfile
+# More info at https://github.com/guard/guard#readme
+
+guard :test do
+  watch(%r{lib/(.+)\.rb})      { |m| "test/#{m[1]}_test.rb" }
+  watch(%r{test/.+_test\.rb})
+  watch('test/test_helper.rb') { "test" }
+end