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

commit 66906b5cb01ac11ead8a2db7f7582f4cc6f2dbd7
parent 7344b0ae2df218da600b2cf1f75e549a33943a05
Author: Christian Grothoff <christian@grothoff.org>
Date:   Wed, 22 Jul 2020 11:04:31 +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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