- Use the --skip-stat flag in createrepo calls.
    - canonicalize tag arches before using them (dgilmore)
    - fix return value of delete_build
    - Revert to getfile urls if the task is not successful in emails
    - Pass --target instead of --arch to mock.
    - ignore trashcan tag in prune-signed-copies command
    - add the "allowed_scms" kojid parameter
    - allow filtering builds by the person who built them