Only allow zip file prefixes of one directory deep. Partial fix for #118.
Only allow zip file prefixes of one directory deep. Partial fix for #118.

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