v6.9.0

• Fixes
  • Converting tar or 7z to zip or cbz, or repacking 7z or cb7, no longer
    turns directories into empty files that break extraction.
  • Converted and repacked archives no longer make files rw-------. Tar and 7z
    permissions and 7z symlinks are kept; rar files get rw-r--r--.
• Changes
  • Require Python 3.11.
• Dep
  • Update treestamps dependency to 5.1.1.
  • Require py7zr 1.1.