not in that order

- move the drawables into dynamic libraries and make them available via plugins
- create a xml-based scene file format
- create and seperate the configuration stuff

- to enable the recording of macros do the following: 
  * write command event handlers for each class and replace the direct key-handling 
    in the the drawable objects by a translator routine
  * replace all direct non-const calls to the camera by command-events that go through the event loop
  * create a special REDRAW event

- write an internal default snapshot output plugin (png or ppm) as a save fallback
- improve the divx output plugin
- Introduce a libtool based numbering schema of the library


