Review and update SubmarineFree. #456

.gitmodules

@@ -194,3 +194,6 @@
 [submodule "repos/PG-Instruments"]
 	path = repos/PG-Instruments
 	url = https://github.com/imekon/PG-Instruments.git
+[submodule "repos/SubmarineFree"]
+	path = repos/SubmarineFree
+	url = https://github.com/david-c14/SubmarineFree.git

manifests/SubmarineFree.json

@@ -3,5 +3,7 @@
   "author": "David O'Rourke",
   "license": "BSD-3-Clause",
   "sourceUrl": "https://github.com/david-c14/SubmarineFree/",
-  "latestVersion": "0.6.0"
+  "manualUrl": "https://github.com/david-c14/SubmarineFree/blob/master/manual/index.md",
+  "latestVersion": "0.6.0",
+  "repoVersion": "0.6.1"
 }

repos/SubmarineFree

@@ -0,0 +1 @@
+Subproject commit e120a91b39a9835e9c455ef51da4c0d71ee175cc