Added explicit returns and line breaks for readability.
Added "source" rel attributes to section.source block.
Placement of line breaks was putting a space between a word and the following punctuation.
More line breaks, for readability.
Build nav menu from layouts instead of special `inNavMenu` yaml.
Stylus don't need no commas. Removed nav bg color.
Second-level nav menus render on every page, but JS toggles showing them.
Added #top-level nav and [onclick] styles.
Styling the plain `nav` element was increasing font size twice for nested <nav> blocks, so I had to change it to #top-level-nav.

And I don't really like linking to "#" for an object that only exists to trigger a script, but I still need the `cursor` style property to alert users that it's clickable, so I assigned it to [onclick].
Kind of like the page <title> element, I think I prefer double arrows (») as a separator.
Changed to single image file for each comic page: Loop over available pages and output <figure> element.
Updating YAML for multi-file pages markup. Note this now includes the markup for handheld layouts too.
More color contrast in nav text styles. Trying to get image alt text to render more like a blockquote, though that isn't working (at least on Firefox).

Figures don't need to align center if they've got auto margins.
I think I like hsl colors better than rgb.