5.15.0 - Video and Text Attachment

Add

• An AVAssetImageDataProvider to generate an image from a remote video asset at a specified time. All the processing gets benefits from current existing Kingfisher technologies, such as cache and image processors. #1500
• New extension methods on NSTextAttachment to load an image from network for an attachment. #1495
• A general clear cache method which combines clearing for memory cache and disk cache. #1494

Fix

• Now the sample app has a new look and supports dark mode, finally. #1496