Cassandra 2.2
  - Fix some compliance issue regarding VTK 5.0
  - Add some features in the default plugin
  - Update JyConsole
  - Improvement of the Cassandra package

Cassandra 2.1
  - Add some features in the default plugin
  - Update JyConsole

Cassandra 2.0
  - A VTK Pipeline Editor
  - Cutting Plane plugin
  - Generic cutter plugin (plane/sphere/cylinder)
  - IsoLevel plugin (Single and Multi level)
  - Threshold plugin
  - Probing line