Events don't get called when doing a recalc()

[caillou]

Say you element is_stuck and you do the following thing:

1. window.scroll(0,0)
2. $(document.body).trigger('sticky_kit:recalc')

Then the following event does not get triggered: sticky_kit:unstick.

A quick hack would be to tick() before a recalc() as follows:

recalc_and_tick = ->
  tick()
  recalc()
  tick()

Obviously this is a really dirty hack. I am not sure how this can be solved right now. The problem comes from the fact that we do a fixed = false when setting the restore variable.