add license

quail/src/test/java/quail/util/geometry/Vec2dTest.java

@@ -1,3 +1,23 @@
+// Copyright (C) Marcus Kauffman 2023-Present
+
+// This work would not have been possible without the work of many
+// contributors, most notably Colin Montigel. See ACKNOWLEDGEMENT.md for
+// more details.
+
+// This file is part of Quail.
+
+// Quail is free software: you can redistribute it and/or modify it
+// underthe terms of the GNU General Public License as published by the
+// Free Software Foundation, version 3.
+
+// Quail is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+// for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Quail. If not, see <https://www.gnu.org/licenses/>
+
 package quail.util.geometry;
 
 import static org.junit.jupiter.api.Assertions.*;