Reviewed Erratic at 0.6.0; added repo pointer and manifest.

.gitmodules

@@ -184,3 +184,6 @@
 [submodule "repos/Qwelk"]
 	path = repos/Qwelk
 	url = https://github.com/raincheque/qwelk.git
+[submodule "repos/Erratic"]
+	path = repos/Erratic
+	url = https://github.com/bafonso/Erratic.git

manifests/Erratic.json

@@ -0,0 +1,9 @@
+{
+  "name": "ErraticInstruments",
+  "author": "Bruno Afonso",
+  "license": "BSD-3-Clause",
+  "authorUrl": "https://brunoafonso.org",
+  "manualUrl": "https://github.com/bafonso/Erratic/blob/master/README.md",
+  "sourceUrl": "https://github.com/bafonso/Erratic",
+  "repoVersion": "0.6.0"
+}

repos/Erratic

@@ -0,0 +1 @@
+Subproject commit 1655127add1e55e57e271bb5e21eaca9eab515a3