X.L.LayoutCombinators: Update for new X.L.(|||)
X.L.LayoutCombinators: Update for new X.L.(|||)

With xmonad/xmonad@45b2275b88065c38532af6a19fbcd03efdcdecdc going live
the functionality of X.L.LayoutCombinators.(|||) was moved into xmonad
core, more specifically into X.L.(|||).  We just need to clean up the
contrib side of things, which involves making JumpToLayout and NewSelect
type aliases and cutting out the custom layout combinator.

Related:
  - https://github.com/xmonad/xmonad/pull/281
  - xmonad/xmonad@45b2275b88065c38532af6a19fbcd03efdcdecdc
  - https://github.com/xmonad/xmonad-contrib/issues/116

xmonad/xmonad-contrib,xmonad/xmonad-contrib