Description

The following changes fix issue #10 :

Add accessible SVG titles to anchor links for post headings (no link text issue)
Add title attributes to form elements without labels
Remove orphaned form labels from TOC, contact and newsletter
Fix headings skipping from h1 to h3 on project and post list pages
Fix empty button issue in markdown code snippets by adding accessible SVG titles
Switch a handful of <section> elements to <div> if there were no headings in that section
Add missing closing tags on any hanging elements
Replace manual spaces with encoded spaces in social share link email subject line
Fix various small issues with contact and newsletter form markup
Remove some redundant links, mostly in main nav submenu
Fix any really bad color contrast issues

Won't fix:

Redundant links in pagination (Hugo internal template is being used)
Very minor color contrast issues when low contrast is helpful like with code highlighting
Redundant links in main nav (can be fixed manually by user in menus.toml)

Type of change