Added a torus tool and the ability to export animations as a series of PNG
or JPEG images. Fixed a bug with OBJ import creating unecessary groups for
some textured models.
The initial Qt4 port has begun. Misfit Model 3D will compile with Qt4 but
it does not run correctly. If you have Qt4 installed you may need to pass
arguments to ./configure to explicitly build using Qt3.
For more details see the ChangeLog.