v1.2.0

Security

• Delete server-side session on logout — @rosa
• Sanitize markdown output in edit history and TOC edit views (#392) — @djmb
• Sanitize search results to prevent XSS from FTS5 output (#420) — @flavorjones

Security-related dependency updates: rack, rack-session, uri, rails-html-sanitizer, nokogiri, addressable.

Features

• Markdown rendering for books and leaves — appending .md to any book or leaf URL renders it as inline markdown — @dhh
• YAML frontmatter in markdown views — markdown output includes title, author, and URL metadata — @dhh
• HTML link tags for markdown alternate format — pages include <link> tags pointing to the markdown version — @dhh
• Use relative links for uploaded files — uploaded file URLs are now relative, improving portability — @kevinmcconnell

Other

• Add README and license — @kevinmcconnell
• Add publish-image workflow for container releases — @kevinmcconnell
• Remove redundant dev credentials and old deployment configs — @kevinmcconnell
• Update fixtures to use example domain — @kevinmcconnell