Feature request: height and width for img must be required

[bastienmoulia]

To allow the browser to keep the space of the image during loading, the attributes height and width must be added to the img tag.

https://www.w3.org/wiki/HTML/Training/Image#Image_size

[kyoyababa]

For me, the another requirement is here. In our rule width and height should not use but described via CSS. For this reason, how is the option such like a below?

'width-height-require': true
'width-height-require': [false, 'never']

Thank you.

[SqrTT]

This PR #184 can solve this issue, you can configure which attributes are required for any tag

[bastienmoulia]

Nice, i hope there will be a new release soon!