add copyright notice

017862b0 · Ralf Jung · df9f373a · 017862b0
Commit 017862b0 authored Mar 13, 2020 by Ralf Jung
--- a/LICENSE-CODE
+++ b/LICENSE-CODE
 All files in this development, excluding those in docs/, are distributed
 under the terms of the BSD license, included below.

+Copyright: Iris developers and contributors
+
 ------------------------------------------------------------------------------

                            BSD LICENCE