- Add RHEL-specific advice to X timeout message (vslavik)
      Related: rhbz#1955306
    - Fix AskVNCSpoke call (vslavik)
      Related: rhbz#1955306
    - Improve X startup error messages (vslavik)
      Related: rhbz#1955306
    - Terminate X server after timeout and restore crash test handler (vslavik)
      Related: rhbz#1955306
    - Reorganize control flow in startX (vslavik)
      Related: rhbz#1955306
    - Handle SIGUSR1 correctly after Xorg timeout (vslavik)
      Resolves: rhbz#1955306
    - Refactor minor details in startX (vslavik)
      Related: rhbz#1955306
    - subscription: allow dates in ISO 8601 format (ptoscano)
      Resolves: rhbz#1947447