goToNextSlide does not loop

[bensimian]

goToNextSlide does not loop instead it transition all the way back to the next slide. Works fine when using the default controls, but when implementing custom controls or external triggers looping does not work. Looking at the code the only difference I could find is the slide.vars.trigger which is set to "external" in the goToNextSlide method. Looking at the "click" handler for the default controls this value is 'controls'.

It seems slide.vars.trigger = 'external' breaks the looping behaviour. Please provide an option to always loop.