Pelmet 0.2.17

Fixed:

• Dragging an icon across the chevron in the menu bar sometimes did not
  stick: the icon stayed in its old section and came back on the next
  collapse. Two causes, both gone. A drag that landed while Pelmet was
  already reading the bar was dropped, and on bars where the chevron
  shifts as Pelmet's own items collapse, the drag was mistaken for the
  chevron moving.