Add SPDX tags

1 files changed, 3 insertions, 0 deletions

diff --git a/util.go b/util.go
index 34cf28b..d6f1985 100644
--- a/util.go
+++ b/util.go
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: © 2022 Grégoire Duchêne <gduchene@awhk.org>
+// SPDX-License-Identifier: ISC
+
 package core
 
 // Must panics if err is not nil. It returns val otherwise.