Exceptions in the render loop don't bring down program

[JakeWharton]

[EpicDima]

Perhaps this is no longer relevant, at least my programs have always crashed. The only thing in the robot sample that didn't happen, it just hung when while(true) was written in the user input loop, now that while(isActive) the program clearly crashes the next time you click

[JakeWharton]

I'll write a test for it, if there isn't one already.