diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..39bbd26
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,4 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {}
+}
diff --git a/COPYING b/COPYING
index bf15194..bf4791b 100644
--- a/COPYING
+++ b/COPYING
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 Google, Inc.
+9// Copyright (c) 2011 Google, Inc.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal