change notes 2023-05-19

Updated my special-box note (at the top of my homepage) about actively seeking research opportunities in both industry and academia.
Various formatting updates (distributed links from footer to left-sidebar and a contact-me section in About; developed right-sidebar with floating header links (w/ jekyll-toc); and automatic bibliographies (w/ jekyll-pandoc and apa.csl)).
Added redirect to CV (w/ jekyll-redirect-from)
Added my commencement speech to Updates!
Added a post: conventional search engines are limited to retrieving pre-existing webpages?