Show LaTeX images inline

[dstein64]

Fixes #14726

Changes proposed in this Pull Request:

• Adds display: inline; to LaTeX images.

Is this a new feature or does it add/remove features to an existing part of Jetpack?

• This is not a new feature.

Testing instructions:

• Change the theme to Twenty Twenty (the default theme)
• Create a new post with the following paragraph:
  • This $latex \LaTeX$ snippet should appear inline.

The rendered LaTeX image should render inline with the surrounding text.

Proposed changelog entry for your changes:

• Show LaTeX images inline.

[jetpackbot]

Thank you for the great PR description!

When this PR is ready for review, please apply the [Status] Needs Review label. If you are an a11n, please have someone from your team review the code if possible. The Jetpack team will also review this PR and merge it to be included in the next Jetpack release.

Scheduled Jetpack release: March 3, 2020.
Scheduled code freeze: February 25, 2020

Generated by 🚫 dangerJS against 88bd135

[jeherve]

Given that the problem is limited to Twenty Twenty, I would be tempted to only add this to Twenty Twenty. What do you think about adding something like this to https://github.com/Automattic/jetpack/blob/d6545508fc4a48582ad443c6173cd1f25bbaddda/modules/theme-tools/compat/twentytwenty.css
:

/* Beautiful Math */
.entry-content img.latex {
        display: inline;
}

[dstein64]

@jeherve, that sounds good to me. Updated in 88bd135.