v0.3.0

Added

• (HeifImagePlugin, Heif) - save now recognizes exif= and xmp= optional parameters. Works as in other Pillow plugins. #25
• (HeifImagePlugin, Heif) - save now recognizes primary_index optional parameter.
• (HeifImagePlugin, Heif) - info["primary"] value.
• (Heif) - primary_index method to HeifFile class.
• Docs: Encoding
• Docs: Changes in Order Of Images

Changed

• Changed image order when multiply images present, HeifFile points to primary image as it was before, but it can be not the first image in a list.
• When using as a Pillow's plugin the only way to know is an image Primary or not is to perform check of info["primary"] value.
• (Heif) - optimized code of HeifImageThumbnail, added get_original method.

Fixed

• (HeifImagePlugin) - save bug, when first frame was saved instead of current.
• Minor usage fixes and optimizations.