fixed bug in multiple curves where ctrl+click was not recognized, fixed bug where removing from a pointless area would crash
fixed bug in multiple curves where ctrl+click was not recognized, fixed bug where removing from a pointless area would crash
fixed modifiers for animation steps
enabled animating all curves at once by using ctrl+a, cannot use button
fixed invalidations with multiple curves on screen by adding an 'invalidate_all()' method, which takes longer to use but clears everything
fixed the issues with clearing
fixed the issues with clearing