Log warnings/errors/diagnostics to stderr instead of stdout.
Log warnings/errors/diagnostics to stderr instead of stdout.

nazriel/dub,gedaiu/dub,p0nce/dub,y12uc231/dub,Geod24/dub,jelmansouri/dub,D-Programming-Language/dub,alexeibs/dub,grogancolin/dub,xentec/dub,Abscissa/dub,Abscissa/dub-data-mod,Flamaros/dub,jeanbaptistelab/dub,dreamsxin/dub,schuetzm/dub,rjframe/dub