fix email address

update headers information in 0x0.el

change build to a sourcehut fedora image

fix checkdoc suggestions

try out gitlab.ci

add link to MELPA in readme

correct readme typos

rm old license, replace with link to it

use derived-mode-p to check dired-mode

add confirmation prompt around ffap selections

The altered readme text tells the story of the unfortunate accidents
that can occur when using 0x0-dwim and ffap guesses.

fix 0x0-dwim dired spaces in file bug

bug is clearly defined in the chunk of readme.org that is removed from
this commit.

add attribution for Philip (pkal)

update commentary for melpa

add tests for response handler

make 0x0-test-- the prefix for all tests.

copy from emacs-0x0

Update public-inbox URL

Ensure that 0x0--choose-service returns a symbol

Thanks to William Vaughn for pointing out the issue

Update 0x0.st URLs

Bump version

Update commentary

Improve file name heuristic