* Move to sharp library to improve image manipulation performance and
support more image formats
* Move video previews in thumbnails directory
* Deprecate lazy static previews endpoint
* Plugin `getFiles()` API now includes a `width`/`height` attribute
* Deprecate previewfile for video publication/update.
Use `thumbnailfile` instead
* Deprecate `thumbnailPath` and `previewPath` of `Video` in favour of
`thumbnails`
* Deprecate `thumbnailPath` of `VideoPlaylist` in favour of
`thumbnails`
* Replace `torrentPath` by `torrentFilename` and `torrentStream` for
remote torrents for `filter:api.download.torrent.allowed.result`
plugin filter
* Remove useless `fileUrl` from `UserExport` and `VideoSource`
* Remove remote captions where we don't have a valid URL
* cache directory is not deleted on each run anymore
* Add permanent cache for video captions and storyboards
* Remove `cache` admin configuration, use house-keeping script instead
Chocobozzz