Change default close behaviour to be `stop`, fix #166
Change default close behaviour to be `stop`, fix #166

Detach is still available using <F7> (default), but <F6> will now
actually stop execution rather than being identical to <F7>

Taluu/vdebug,paprykarz/vdebug,benjifisher/vdebug,coffeine-009/vdebug,paprykarz/vdebug,benjifisher/vdebug,jerray/vdebug,joonty/vdebug,paprykarz/vdebug,jerray/vdebug,AndBicScadMedia/vdebug,Taluu/vdebug,benjifisher/vdebug,AndBicScadMedia/vdebug,AndBicScadMedia/vdebug,coffeine-009/vdebug,jerray/vdebug,Taluu/vdebug,joonty/vdebug,joonty/vdebug,coffeine-009/vdebug