Release 1.6.2

Breaking change, the settings.php has been removed, all settings are now stored in the .env file, so please make sure to transfer your settings to the new .env file.

• Support default (Gitlab / Github) Markdown Images
• Fixed broken links in tables, merged PR #184 thanks to @Nick-LCY
• Fixed Intended Fence Code Block rendering
• implemented support for Footnotes #9
• Fixed internal default Markdown Links
• Extended YAML Frontmatter support
• Fixed callouts with no content [#182]
• updated katex to 0.18.9
• updated highlight.js to 11.12.0
• updated mermaid to 11.15.0
• updated vis-network to 10.1.2
• all settings are now configured in a single .env file (see .env.example), used by docker compose and read directly by helper.php without docker, settings.php has been removed
• new setting TREE_VISIBLE_EXTENSIONS to show other files (e.g. pdf,docx) next to the notes in the navigation, clicking them downloads the file [#181]
• read-only support for Obsidian Canvas (.canvas) files: text, note (embedded), image, link and group cards, edges with labels and colors, pan & zoom (drag / wheel, ctrl + wheel or pinch to zoom), the right side-dock is collapsed while a canvas is open
• canvas embeds: video and audio files are played inline, YouTube / Vimeo links are embedded, new setting CANVAS_IFRAME_EMBEDS (off, click, auto, default click) to embed websites of link cards as sandboxed iframe