TODO list
  - community repos: add repository handling on dependencies to avoid library breakages
  - External trigger: rewrite support and use bash
  - split entropy.py into entropy package
  - make.profile support (saving profile information into the db)
  - database backup tools
  - implement pdepend support in dependencies sorting
  - implement package sets (meta packages list)
  - handle multiple versions within the same slot
  - use expiration as a base to have and handle multiple packages in repo?
  - implement notice board
  - implement configuration files snapshot tool
  - allow interactivity for games requiring CDs/DVDs
  - add changelog to packages
  - documentation + man page
  - packages.sabayonlinux.org interactivity (comments + images upload + connection to phpbb user db)
  - find a way to better handle real smartapps deps (need split PDEPEND?)
  - server-side: packages upload through ssh?

  Spritz:
    - Popularity feature / Your Ego service
    - Category <-> Image dictionary (for the properties menu)
    - Spritz related preferences
    - allow package remasking?

Notes:
- when supporting more than one ":" in atoms, remember to fix treeupdates functions accordingly