Grant by paddor

Received by Github message:
https://github.com/zeromq/libzmq/pull/2121#issuecomment-526833407

RELICENSE/paddor.md

+# Permission to Relicense under MPLv2
+
+This is a statement by Patrik Wenger
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2).
+
+A portion of the commits made by the Github handle "paddor", with
+commit author "Patrik Wenger", are copyright of Patrik Wenger .
+This document hereby grants the libzmq project team to relicense libzmq,
+including all past, present and future contributions of the author listed above.
+
+Patrik Wenger
+2019/08/31