Update to 2.5.0
    
    Features
      * Have ci-status also query Checks API
    Fixes
      * Do not pass '--cmd' to vi editor to ensure compatibility with older vi
      * Simplify cherry-picking commits from pull request URLs
      * Allow single-character branches/tag names in hub compare
      * Fix hub compare for Enterprise when <USER> is specified
      * Support remote add -t BRANCH argument
      * Bash shell completion fixes for git 2.18
      * Documentation fixes
    
    Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>