Elastishot v0.1.3

Fixed

• The slider handle and the region chip sat inside the viewer's scroll
  container, so on a page taller than the stage they scrolled away with the
  image and the handle covered only the top of it. They now sit in a frame
  around the scroll container and stay in view; the reveal edge follows the
  stage's horizontal scroll under a zoom. The stage is wrapped in a box with
  its scaled layout size, so a vertical scrollbar no longer brings a
  horizontal one, and the stage refits when the scrollbar appears.