fixes bug 1072373 - Upgrade to crontabber 0.13

@twobraids r?

I tested it locally and ran my sample app with it too. 
I'm sorry for this change. My editor cleans up the whole file when I save. Not just the lines *I* changed. 
However, it was a mistake by the person who landed that change and the person who reviewed it to not spot the trailing space.