bump to 5.7.0 for 4.3!
bump to 5.7.0 for 4.3!

sheldon/epgp,sheldon/epgp,hayword/tfatf_epgp,protomech/epgp-dkp-reloaded,ceason/epgp-tfatf,hayword/tfatf_epgp,ceason/epgp-tfatf,protomech/epgp-dkp-reloaded