Add constraint "unordered-containers < 0.2.8.0" per #2386
Add constraint "unordered-containers < 0.2.8.0" per #2386

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