Previously cached .zip files passed the valid media check and were
returned without conversion. Now zips are detected and converted
to GIF before the general cache check.
- Detect .zip files (Pixiv ugoira) and convert frames to animated GIF
- Cache the converted GIF so subsequent loads are instant
- Add filetype field to the info panel
- Add ZIP to valid media magic bytes
Supports Danbooru, Gelbooru, Moebooru, and e621. Features include tag search
with autocomplete, favorites with folders, save-to-library, video playback,
drag-and-drop, multi-select, custom CSS theming, and cross-platform support.
