Grant by jbreams

Received as Github comment:
https://github.com/zeromq/libzmq/pull/1451#issuecomment-526832003

RELICENSE/jbreams.md

+# Permission to Relicense under MPLv2 or any other OSI approved license chosen by the current ZeroMQ BDFL
+
+This is a statement by Jonathan Reams
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2) or any other
+Open Source Initiative approved license chosen by the current ZeroMQ
+BDFL (Benevolent Dictator for Life).
+
+A portion of the commits made by the Github handle "jbreams", with
+commit author "Jonathan Reams <jbreams@gmail.com>", are copyright of
+Jonathan Reams.
+This document hereby grants the libzmq project team to relicense libzmq,
+including all past, present and future contributions of the author listed
+above.
+
+Jonathan Reams
+2019/08/31