Configuring The Xmobar Panel In Xmonad

One of the trickiest things about setting up the Xmonad tiling window manager is configuring the panel, which for most Xmonad users is Xmobar. When new users look at the example configs and the documentation for Xmobar, they can be overwhelmed by the lengthy manual and the multitude of options available. But it's not as complicated as it seems.
REFERENCED:
► hackage.haskel... - Xmobar Documentation
► raw.githubuser... - Example Xmobar config
► gitlab.com/dwt... - DT's Xmonad config
► gitlab.com/dwt... - DT's Xmobar config
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