bug#44671: 28.0.50; Require Emacs 26.1, nor Emacs 26.3, in project.el and xref.el core packages

[Dmitry Gutov]

On 27.01.2021 12:09, João Távora wrote:
> No, I just forgot about it.  I have a lot on my plate right now, do
> you mind if I ask you to push it?

Please feel free to change the dependency line, but don't bump the xref 
version yet.

There are some changes there currently I'm not entirely confident in, to 
put them into a release.

For project.el both are okay.