Add and Improve Link Styling

What's Changed

• Linked post author name to profile by @thewildmage in #87
  • Closed #58
• Added and improved link styling by @thewildmage in #92
  • Added default link styling. Closed #34
  • Applied :hover styles on :focus as well
  • Made sure that links are obviously links
  • Made sure that hovered or focused links stand out as such
  • Closed #33

Full Changelog: v0.16.1...v0.17.0