0.2 (2013/06/30)
    - New plugin system based on Doug Hellmann's `stevedore` package,
      allows packages to extend spreads without being included in the core
      distribution
    - The driver for CHDK cameras no longer relies on gphoto2 and ptpcam,
      but relies on Abel Deuring's `pyptpchdk` package to communicate with
      the cameras.
    - `Wand` is now used to deal with image data instead of `Pillow`
    - New 'colorcorrection' plugin allows users to automatically correct
      white balance.
    - Improved tutorial

0.1 (2013/06/23)
    Initial release
