Smooth Center

Smoothly centres display when you press Esc like zz, zt and zb

• Script id: 3149
• Author: Paul Contreras
• Latest version: 1.7
• Release date: 2010-09-17
• Release notes:
  Made improvements to scroll till cursor is on top and cursor is at bottom cases.  These work very reliably when in folded mode.  The center case is not quite stable but kind of works, there are still some glitches in folded mode and when the buffer is scrolled near the bottom.