vali-um signed cla (#260)

contributors/vali-um.md

@@ -0,0 +1,11 @@
+2022-04-13
+
+I hereby agree to the terms of the Contributors License
+
+I furthermore declare that I am authorized and able to make this
+agreement and sign this declaration.
+
+Signed,
+
+Valentin Kleibel
+https://github.com/vali-um