[GNU ELPA] Xelb version 0.18

[ELPA update]

Version 0.18 of package Xelb has just been released in GNU ELPA.
You can now find it in M-x list-packages RET.

Xelb describes itself as:

  =============================
  X protocol Emacs Lisp Binding
  =============================

More at https://elpa.gnu.org/packages/xelb.html

## Summary:

  Overview
  --------
  XELB (X protocol Emacs Lisp Binding) is a pure Elisp implementation of X11
  protocol based on the XML description files from XCB project.  It features
  an object-oriented API and permits a certain degree of concurrency.  It
  should enable you to implement some low-level X11 applications.

  How it works
  ------------
  As is well known, X11 is a network-transparent protocol.  All its messages,
  including requests, replies, events, errors, etc are transported over
  network.  Considering that Emacs is powerful enough to do network
  communication, it is also possible to use Emacs to send / receive those X11
  messages.  Here we fully exploit the asynchronous feature of network
  connections in Emacs, making XELB concurrent in a sense.

## Recent NEWS:

[Not provided 🙁]