Add copyright headers and update authors

Hendrik van Antwerpen · Hendrik van Antwerpen · commit ca834c7f2ff1 · 2023-03-21T14:41:31.000+01:00
diff --git a/AUTHORS b/AUTHORS
@@ -1,2 +1,3 @@
 Douglas Creager <dcreager@dcreager.net>
 Hendrik van Antwerpen <hendrikvanantwerpen@github.com>
+Akshay <nerdy@peppe.rs>
diff --git a/stack-graphs/src/serde/filter.rs b/stack-graphs/src/serde/filter.rs
@@ -1,3 +1,10 @@
+// -*- coding: utf-8 -*-
+// ------------------------------------------------------------------------------------------------
+// Copyright © 2023, stack-graphs authors.
+// Licensed under either of Apache License, Version 2.0, or MIT license, at your option.
+// Please see the LICENSE-APACHE or LICENSE-MIT files in this distribution for license details.
+// ------------------------------------------------------------------------------------------------
+
 use itertools::Itertools;
 
 use crate::arena::Handle;
diff --git a/stack-graphs/src/serde/graph.rs b/stack-graphs/src/serde/graph.rs
@@ -1,3 +1,10 @@
+// -*- coding: utf-8 -*-
+// ------------------------------------------------------------------------------------------------
+// Copyright © 2023, stack-graphs authors.
+// Licensed under either of Apache License, Version 2.0, or MIT license, at your option.
+// Please see the LICENSE-APACHE or LICENSE-MIT files in this distribution for license details.
+// ------------------------------------------------------------------------------------------------
+
 use serde::Deserialize;
 use serde::Serialize;
 use thiserror::Error;
diff --git a/stack-graphs/src/serde/mod.rs b/stack-graphs/src/serde/mod.rs
@@ -1,3 +1,10 @@
+// -*- coding: utf-8 -*-
+// ------------------------------------------------------------------------------------------------
+// Copyright © 2023, stack-graphs authors.
+// Licensed under either of Apache License, Version 2.0, or MIT license, at your option.
+// Please see the LICENSE-APACHE or LICENSE-MIT files in this distribution for license details.
+// ------------------------------------------------------------------------------------------------
+
 mod filter;
 mod graph;
 
diff --git a/stack-graphs/tests/it/serde.rs b/stack-graphs/tests/it/serde.rs
@@ -1,6 +1,6 @@
 // -*- coding: utf-8 -*-
 // ------------------------------------------------------------------------------------------------
-// Copyright © 2022, stack-graphs authors.
+// Copyright © 2023, stack-graphs authors.
 // Licensed under either of Apache License, Version 2.0, or MIT license, at your option.
 // Please see the LICENSE-APACHE or LICENSE-MIT files in this distribution for license details.
 // ------------------------------------------------------------------------------------------------

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,3 @@`
`1`	`1`	`Douglas Creager <[email protected]>`
`2`	`2`	`Hendrik van Antwerpen <[email protected]>`
	`3`	`+Akshay <[email protected]>`