neomake#utils#ExpandArgs: do not change 'iskeyword' (#1780)
neomake#utils#ExpandArgs: do not change 'iskeyword' (#1780)

It is not clear to me why this would be needed (there is also no failing test),
and it pollutes `:verb set isk?`, because Neomake will show up there
then.
neomake/neomake,nerdrew/neomake,codeinabox/neomake,nerdrew/neomake,neomake/neomake