Make Y yank to the end of line, and keep my selection while shifting.

Fixed a typo too.
Turn on list and setup listchars.

With my colorscheme, this isn't all that distracting and I like seeing
what's embedded.
Add fullscreen support under Mac and Linux.
Make the color column dark red.

The gray made it confusing as to whether there was a split or not, even
though I had them colored a little differently.