Added clearmatics copyright

AntoineRondelet · web-flow · commit 08e7fa6c47cf · 2021-03-31T14:33:42.000+01:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,7 @@
 The libsnark library is developed by SCIPR Lab (http://scipr-lab.org)
 and contributors.
 
+Copyright (c) 2019-2021 Clearmatics
 Copyright (c) 2012-2014 SCIPR Lab and contributors (see AUTHORS file).
 
 All files, with the exceptions below, are released under the MIT License:
