changelog
    
    
    - Fri, 18 Oct 2013 23:49:55 +0300
 
    - by Santeri Piippo <crimsondusk64@gmail.com> [Fri, 18 Oct 2013 23:49:55 +0300] rev 516
 
    - - added LDSharedVertex class for holding copy-on-write vertices. Will need this for future features..
- fixed zoomToFit() crashes for real this time