Add stackoverflow to aliases
Add some style
Add imgur to aliases
Return default list style

Reseting all `ul` elements' style was probably overzealous. This returns
most lists to their default `list-style-type` and `margin`.
Add license
Post "Hello World (About this Blog)"
Correct license link

The link to the license in the footer incorrectly used a relative link.
Change it to an absolute path.
Update README
Update copyright year

This will automatically update the copyright year based on the current
date. It still requires that the site be generated.