v3.3.4 tasks (needed for NOAA-tech-memo template)

[eeholmes]

• [x] :bug: with author-color: "blue" throws error
• [x] :bug: stop author names from being hyphenated
• [x] :bug: in coverpage, footer-style: "colorbox" does not make a color box
• [x] add top-level coverpage-date: "date"
• [x] :bug: date not showing up at all on coverpage
• [x] need affiliation-sep completed w v3.3.4

[eeholmes]

Solved the color box by adding -node-spec to pass in values for the text node, like fill=blue.