synchronize with latest GANA - exchange - Base system with REST service to issue digital coins, run by the payment service provider

commit 3934160eeac12356b6453a890b9e25fb2a24ce1c
parent d3a76ce2aaef5d56e8ab4cf97431186a1fc571eb
Author: Christian Grothoff <christian@grothoff.org>
Date:   Wed, 22 Jul 2020 11:02:10 +0200

synchronize with latest GANA

	exchange Base system with REST service to issue digital coins, run by the payment service provider
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