ImpromptuModular reviewed (#411)

* Updates FrozenWasteland submodule commit.

* Post-review update of ImpromptuModular pointer and manifest.

manifests/ImpromptuModular.json

@@ -6,5 +6,6 @@
   "manualUrl": "https://github.com/MarcBoule/ImpromptuModular/blob/master/README.md",
   "sourceUrl": "https://github.com/MarcBoule/ImpromptuModular",
   "latestVersion": "0.6.0",
+  "repoVersion": "0.6.1",
   "status": "available"
 }

repos/ImpromptuModular

@@ -1 +1 @@
-Subproject commit 6131604464c5ffb8775574661c32123e72cbd05f
+Subproject commit 767c200ad7c296193a209bb344257fedbd602731