More readable auto-naming for unsaved tabs

[fffedor]

Hi.

Thanks for the great editor. I would like to suggest a feature for more readable names for new tabs.

It was previously suggested here to make it possible to edit new tab names and the feature was cancelled due to non-standard behaviour.

I would like to propose to do similar to Sublime Text editor, where the name of a new unsaved tab is taken from the first line of content (see screenshot). I think it would make it easier to recognise new tabs and more convenient. What do you think?