Your comments

Good point. Fixed for version 19.2 preview (SG-13044).

A screenshot of what is currently present (work-in-progress): for the selected lines (orange), you will see the restricted Navigation graph. In this graph, you will see:
  • all of the selected commits (orange dot)
  • all commits for predecessor lines, .i.e replaced lines (black dot)
  • auxiliary merge commits which are necessary to display the filtered lines with a reasonable structure (gray font)

This is actually something I'm currently working on for DeepGit. But maybe DeepGit will already be helpful to you in its current form: Query|Investigate .

Since 18.2.7, there is now Preferences, Low-level property "connection.https.trustedFingerprints"

Sorry about confusion about topics. I have now published this one.

Is this a duplicate of https://smartgit.userecho.com/communities/1/topics/953- ?

It should be possible to implement this for equal lines and changes for which left change side size = right change side size. But what about changes which have different size on left and right side?

> * I would love to be able to just pick an author from a list, instead of typing everything myself

We could probably offer an editable combo-box instead of a plain text field.

> * it would be nice to be able to set multiple authors

That's a completely different operation because it's not using pure Git functionality but instead adds and interprets special lines of the commit message.

I would suggest the following: convert this topic to "Commit: support for 'Co-authored-by'" (https://help.github.com/en/articles/creating-a-commit-with-multiple-authors) and have another topic for the editable Author combo-box in Edit Author?