Migrate from gsl::span to std::span
Replace gsl::span with C++20 std::span
goes together with Allen!2143 (merged) and MooreOnline!676 (merged). And Allen!2143 (merged) goes together with Moore!5413 (merged)
To do
-
ci-test against lhcb-master -
ci-test against lhcb-sim11
Edited by Gerhard Raven