Release 4.5.0

[himdel]

ansible-hub-ui: ansible/ansible-hub-ui#2042

[himdel]

(for future reference..

  pip install bump2version towncrier

  cd galaxy_ng
  git fetch upstream
  git checkout stable-4.5
  # make dev/bumpversion-patch won't work for 4.5.0b1 -> 4.5.0
  bump2version --new-version 4.5.0 patch --verbose
  git add galaxy_ng setup*
  make changelog # towncrier build
  ls CHANGES # ensure empty CHANGES/
  (echo 'Release 4.5.0'; echo; echo 'No-Issue') | EDITOR=tee git commit
  git push origin HEAD:release-4.5.0
  git checkout master
  git branch -D stable-4.5

)