0.31.0-alpha

• update all languages
• drastically reduce disk usage of thumbnails
• fix thumbnails for video files under 10 seconds
• add thumbnail support for most common archive formats (requires Zip, Rar PHP modules)
• fix broken thumbnails and previews for files with incorrect file extensions
• add file type detection based on MIME (requires Fileinfo PHP module)
• remove client's ability to request custom samples and thumbnails