new after 0.3:
- RANDR extension supported
new after 0.2.1:
- added --interactive
- RENDER extension supported
new from 0.2 to 0.2.1:
- --keeprunning should work now
- better extension support for multiple clients
new from 0.1 to 0.2:
- some cleanup
- SHAPE extension supported (and some little framework for extensions)
- added --help option
