git subrepo pull (merge) float

subrepo:
  subdir:   "float"
  merged:   "53173642"
upstream:
  origin:   "https://git.autistici.org/ai3/float.git"
  branch:   "master"
  commit:   "0735dbc8"
git-subrepo:
  version:  "0.4.5"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "aa416e4"