Bump to 2.9.0~pre1
Use round() rather than float-to-int conversion in canvas._gabor() and canvas._noise_patch()
- Closes #283
Improve detection of Exception message in osexception
- Closes #285
Add debug._msg() for debugging even outside of debug mode
- For use in development *only*
Fix font widget in sketchpad
- Initialize only once
- Don't apply when controls are programatically changed
- Closes #284
Update debian/changelog