chore(addon): #1930: Change version scheme
chore(addon): #1930: Change version scheme

sarracini/activity-stream,rlr/activity-streams,Mardak/activity-stream,sarracini/activity-stream,AdamHillier/activity-stream,Mardak/activity-stream,mozilla/activity-streams,JaredKerim-Mozilla/activity-stream,sarracini/activity-stream,mozilla/activity-stream,rlr/activity-streams,JaredKerim-Mozilla/activity-stream,sarracini/activity-stream,mozilla/activity-stream,AdamHillier/activity-stream,JaredKerim-Mozilla/activity-stream,AdamHillier/activity-stream,mozilla/activity-stream,mozilla/activity-streams,JaredKerim-Mozilla/activity-stream,rlr/activity-streams,rlr/activity-streams,Mardak/activity-stream,Mardak/activity-stream,AdamHillier/activity-stream,mozilla/activity-stream