Remove upper bound for chronos, closes #4724
Remove upper bound for chronos, closes #4724

mrkkrp/stackage,clinty/stackage,Daniel-Diaz/stackage,simonmichael/stackage,stackbuilders/stackage,soenkehahn/stackage,asr/stackage,spencerjanssen/stackage,jonschoning/stackage,fpco/stackage,michalkonecny/stackage,athanclark/stackage,fimad/stackage,wereHamster/stackage,iand675/stackage,massysett/stackage