Lanyon Versions Save

• Resolves Jekyll 3 (and now 4) issues: remove relative_permalinks, update plugins list, reformat _config.yml
• Fixes baseurl issues by moving to absolute_url filter nearly everywhere
• Improves sidebar toggle in themes
• Adds size check to site.related_posts to avoid showing no related posts
• Fix homepage active link highlight
• Add config option for Google Analytics
• Simpler pagination paths
• Updated dates on all posts, tweaked some content

Initial release.