feat: register mblarsen.is-a.dev

domains/mblarsen.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mblarsen",
+    "twitter": "mblarsen"
+  },
+  "records": {
+    "URL": "https://github.com/mblarsen"
+  }
+}