main
portico: Remove screenshots from /apps.
web: Move web app to ‘web’ directory.
inbox: Improve look of empty inbox view.
portico: Add a Zulip Cloud landing page.
thumbnail: Show the right spinner based on dark/light mode.
checkboxes: Render border-color-matched SVGs in light and dark modes.
markdown: Add support for inline video thumbnails.
css: Add resizer handle icon in resizable textarea for webkit.
logo: Fix clipping of Zulip logo at large font sizes
