[Feature Request] Add webp image support

[ghost]

Is your feature request related to a problem? Please describe.
Currently only PNG and JPEG is supported, but new formats like WEBP gives you impressive space saving results when used on manga images, so i would like to see added support for it.
On my personal library i found over 50% less space was used.
I found even more impressive results with HEIC, but no browser supports it, so we'd need to supply a client sided converter for it, which is cumbersome.

[hkalexling]

Supporting webp is a good idea. I will include this in the next version.

For HEIC (and other currently unsupported filetypes), we could use something like libvips to convert the images to jpeg on the fly before serving them. I don't think HEIC support should be prioritized at this stage as it's rare to find archives containing HEIC images, but PRs are always welcome.

[ghost]

I see commit dc084af where you added webp support and am closing the issue.

[hkalexling]

This feature is now available in v0.7.0. Thanks for the request!