Remove Go tip, add 1.6beta2
Remove Go tip, add 1.6beta2

arithmetric/restic,jayme-github/restic,ar-jan/restic,ar-jan/restic,kurin/restic,jayme-github/restic,byo/restic,middelink/restic,kurin/restic,stuertz/restic,restic/restic,ckemper67/restic,restic/restic,fawick/restic,bchapuis/restic,byo/restic,middelink/restic,fawick/restic,stuertz/restic,mappu/restic