Version bump to 2.22.0
Version bump to 2.22.0

kevinansfield/Ghost,ErisDS/Ghost,Kikobeats/Ghost,janvt/Ghost,bitjson/Ghost,kevinansfield/Ghost,janvt/Ghost,ErisDS/Ghost,e10/Ghost,Kikobeats/Ghost,TryGhost/Ghost,bitjson/Ghost,TryGhost/Ghost,kevinansfield/Ghost,Kikobeats/Ghost,JohnONolan/Ghost,e10/Ghost,JohnONolan/Ghost,JohnONolan/Ghost,TryGhost/Ghost,ErisDS/Ghost