Add license information and update authors

d2warehouse/item.py

@@ -1,3 +1,19 @@
+# Copyright 2023 <omicron.me@protonmail.com>
+# Copyright 2023 <andreasruden91@gmail.com>
+#
+# This file is part of d2warehouse.
+#
+# d2warehouse is free software: you can redistribute it and/or modify it under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation, either version 3 of the License, or (at your option) any later
+# version.
+#
+# d2warehouse 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
+# Mercator. If not, see <https://www.gnu.org/licenses/>.
 import json
 import os
 from bitarray import bitarray