Updating to preview4

makefile.shade

@@ -12,7 +12,7 @@ default TEST_ARTIFACTS_INITIAL_PACKAGE_DIR='${Path.Combine(TEST_ARTIFACTS_DIR, "
 var VERSION='0.1'
 var FULL_VERSION='0.1'
 var AUTHORS='Microsoft Open Technologies, Inc.'
--BuildQuality = "preview3";
+-BuildQuality = "preview4";
 
 use-standard-lifecycle
 k-standard-goals