• Add a demo mode that serves images from unsplash.com (gscreen demo)
• Add a "photo wall" mode that displays multiple images/videos scrolling past at once

Fix a few minor cosmetic bugs in the slideshow frontend

• Limit response body size: never download more than 20MB of data per media item
• Fix timing issue that caused errors with stale baseURLs
• Allow installing gscreen via homebrew
• Allow setting --data-dir via environment variable
• List albums for all authenticated accounts (gscreen albums list)
• Limit a slideshow to one or more Google Photos albums via the --album-ids flag

• Create slideshows across multiple Google accounts
• Resume interrupted metadata indexing jobs instead of starting from scratch every time

Assorted bugfixes:

• Don't attempt to download expired baseURLs
• Use the video player if serving the video component of a motion photo
• Don't fetch motion photos on the very first batch to prevent stalls
• Minor styling improvements

Initial release, containing:

• Command-line tool to start up a webserver that hosts slideshows
• Metadata management, including detecting motion photos
• Server-side caching for smoother transitions