Show HN: Open-Source Notion UI, Lotion (github.com)

- Block-based editor - Drag to reorder blocks - Basic Markdown-parsing including bold, italic, headings and divider - Type '/' for command menu and shortcuts

Tiny fun detail: When you move between blocks with your arrow keys, your cursor will remain at roughly the same horizontal position (vs jumping to the start or end of a block).

Lotion is quite limited for now, and we would love any contributions (e.g. image blocks, video blocks, code blocks, etc.)