CHANGELOG: cut 0.12.0 and 0.13.0+dev (#6264)
CHANGELOG: cut 0.12.0 and 0.13.0+dev (#6264)


chriswatt/gogs,mukaiu/gogs,gogits/gogs,chriswatt/gogs,chriswatt/gogs,gogits/gogs,mukaiu/gogs,gogits/gogs,mukaiu/gogs