Martin Holst Swende authored Feb 23, 2018 and Péter Szilágyi committed Feb 23, 2018

* core, vm, common: define constantinople fork, start implementation of shift instructions

* vm: more testcases

* vm: add tests for intpool erroneous intpool handling

* core, vm, common: fix constantinople review concerns

* vm: add string<->op definitions for new opcodes