Add curve trim, compound class and some small features.
Opencascade upgrade to 7.4.0
Add interpolate2
Sweeps moved from solid
Универсальное API афинных преобразований.
Перерабона система классов.
Add perspective support.
Transformation API improved.
Add shape classes.
Change few function`s signature.
Many other small changes.
Refactor
Add OSX support.
Remove depend modules igris and nos.
Fix interactive_object fast drawing for hide function.
Add Changelog.
Add boundbox.