We require AT v1.3.4 now!
Updated AT-related logging.
Added "isInitial" flag to AT state data so that state data created at
deployment is not added to serialized block data.
Updated BTC-QORT AT code and tests to cover various scenarios.
Added missing 'testNtpOffset' to various test versions of 'settings.json'.
Added missing 'ciyamAtSettings' to various test blockchain configs.
Loads of AT-related additions/fixes/etc. to core code, e.g Block
