Adopt counsel-gtags package

[FelipeLema]

Brief summary of what the package does

Original counsel-gtags repo seems abandoned. I've tried contacting the author through pull requests and mail without success

Direct link to the package repository

https://github.com/FelipeLema/emacs-counsel-gtags

Your association with the package

Maintainer of the fork.

Relevant communications with the upstream package maintainer

None needed

Checklist

Please confirm with x:

• The package is released under a GPL-Compatible Free Software License.
• I've read CONTRIBUTING.org
• I've used the latest version of package-lint to check for packaging issues, and addressed its feedback
• My elisp byte-compiles cleanly
• M-x checkdoc is happy with my docstrings
• I've built and installed the package using the instructions in CONTRIBUTING.org

[Ergus]

I have been using the fork since some weeks ago and it fixes some of the issues in the original repo. I also tried to contact the initial developer some months without success. So the adoption is very recommended as soon as possible.

[purcell]

Thanks. Happy to merge this, but the new code needs to declare a package dependency on seq now that it has been changed to start using that library. (Sorry for the slow response, btw.)

[FelipeLema]

@purcell updated package reqs in FelipeLema/emacs-counsel-gtags@3ebfd41

[purcell]

Great, thank you.