Bumping dependencies (base 4.7; hakyll 4.5).
Adding a proper title to <title> and sidebar.

The CSS for making the sidebar title look right is a bit brittle.
Separating post template from base template.
Showing publication date in posts.
Linking to GitHub issues/comment threads.

In addition, many adjustments to the pre-footer layout, and ensuring
the pre-footer shows up in some form in the RSS feed.
Do not duplicate the post date in the RSS feed.