fixed bug with ridge traversal method not working
compute memory usage and print warning if above memory size
created garbage collector object
added destructor to GC and put vector fields blurredVolume into the GC
more objects to GC
more objects to GC
quick fix for invalid command queue errors by just running algorithm one more time
added a message if invalid command queue occurs
eliminated some differences in the segmentation step
more informative error messages if too many or too few centerpoints are detected
fixed one OpenCL problem on Mac: unable to parse nested macros
Merge branch 'unstable' of https://github.com/smistad/Tube-Segmentation-Framework into unstable
Merge branch 'unstable' of github.com:smistad/Tube-Segmentation-Framework