This function provides a new progress-bar (waitbar in MATLAB-speak) with the following features:

* Multiple bars in one window

* Robust to the window being closed

* Time-estimates for long-running tasks

* Completion percentage for long-running tasks

* Control of the color for each bar

* Textured bars (pointless, but nice)

* No need to keep/manage window handles

* Cancel tasks using a return flag or callback function

* "Busy mode" where a bar bounces back and forth



Note that this incurs roughly the same computational overhead as the built-in WAITBAR for low numbers of iterations and usually less overhead for high numbers of iterations.



Requires MATLAB R2009a or above.