[NonGNU ELPA] Geiser version 0.31

[ELPA update]

Version 0.31 of package Geiser has just been released in NonGNU ELPA.
You can now find it in M-x list-packages RET.

Geiser describes itself as:

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  GNU Emacs and Scheme talk to each other
  =======================================

More at https://elpa.nongnu.org/nongnu/geiser.html

## Summary:

  1 Overview
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    Geiser is a generic Emacs/Scheme interaction mode, featuring an
    enhanced REPL and a set of minor modes improving Emacs' basic scheme
    major mode. The main functionalities provided are:

## Recent NEWS:

[Not provided 🙁]