Allow hspec-contrib test suites per hspec/hspec#307
Allow hspec-contrib test suites per hspec/hspec#307

mgajda/stackage,int-index/stackage,spencerjanssen/stackage,ethercrow/stackage,soenkehahn/stackage,peti/stackage,fimad/stackage,judah/stackage,phaazon/stackage,simonmichael/stackage,clinty/stackage,creichert/stackage,massysett/stackage,Daniel-Diaz/stackage,asr/stackage,garetxe/stackage,fpco/stackage,jonschoning/stackage,athanclark/stackage,lwm/stackage,GregorySchwartz/stackage,Shimuuar/stackage,k0ral/stackage,stackbuilders/stackage,mstksg/stackage,mrkkrp/stackage,wereHamster/stackage,ygale/stackage,iand675/stackage,michalkonecny/stackage,alanz/stackage