Some notes on responsive images

[wrobelda]

Hi there,

I used your responsive image code to add similar functionality to WonderMod theme in this PR.

I did make a few changes, though, namely:
— I added an AutoOrient filter to prevent Hugo from losing the EXIF rotation information upon rendering the images (https://gohugo.io/functions/images/autoorient/)
— ported back the figcaption section from the original figure Hugo shortcode, such that your image partial can be used to generate img in figure shortcode as well, although my understanding is you don't offer that.

I thought you'd find that noteworthy.

[schnerring]

I'll leave this issue open until I find the time to incorporate this into the theme.

Thanks for the feedback!