fix(classes): Define \strong weight=700, not 600 (#1097)
fix(classes): Define \strong weight=700, not 600 (#1097)

600 weight is traditionally Semibold, Bold is 700. Since relatively few
fonts have Semibold instances at all I think most people got what they
were expecting to get out of \strong — the Bold as the nearest rounded
up weight available. For fonts with actual Semibold faces this is just
wrong.
alerque/sile,alerque/sile,alerque/sile,alerque/sile