The bug fixes include:
- `<html>` nodes being added to the replaced image when `unwrap_noscript_tags`
is called.
- Remove `srcset` attribute of <img> tags after downloading the image. This
prevented readers like Foliate from displaying the downloaded image
- Prevent downloading images with base64 strings as the source
- Add escaping of quotation characters in the serializer
- Disable redirects when downloading images which fails on multiple sites
- Remove invalid characters for making the epub export file name
- Fix version number in release
Change from using res directory for image downloads to using temp directories.
Update surf to v2 which required changing the way Content-Type headers are
read from.
