update scratch-blocks version

Author: ericrosenbaum

package.json

@@ -105,7 +105,7 @@
     "redux-throttle": "0.1.1",
     "rimraf": "^2.6.1",
     "scratch-audio": "0.1.0-prerelease.20190114210212",
-    "scratch-blocks": "0.1.0-prerelease.1556058260",
+    "scratch-blocks": "0.1.0-prerelease.1556115881",
     "scratch-l10n": "3.2.20190417195644",
     "scratch-paint": "0.2.0-prerelease.20190416185326",
     "scratch-render": "0.1.0-prerelease.20190419202157",