[NonGNU ELPA] Powershell version 0.4

Version 0.4 of package Powershell has just been released in NonGNU ELPA.
You can now find it in M-x list-packages RET.

Powershell describes itself as:

  ===================================
  Mode for editing PowerShell scripts
  ===================================

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

## Summary:

  PowerShell Mode
  ===============


  PowerShell Mode is an Emacs major mode for editing and running
  Microsoft PowerShell files.

  Installation
  ============

  **With MELPA**

  First, add the package repository:

  ```lisp
  (add-to-list 'package-archives
	       '("melpa" . "https://melpa.org/packages/") t)
  ```

  Then install `powershell.el`:

  <kbd>M-x package-install RET powershell RET</kbd>

  You can also install the package use `use-package`:

  ```lisp
  (use-package powershell
      :ensure t)
  ```

  **El-Get**

  `powershell.el` is included in the El-Get repository

  Install powershell.el:

  <kbd>M-x el-get-install RET powershell.el RET</kbd>

  **Manually**

  Download `powershell.el` and place the download directory on your
  `load-path` like so:

## Recent NEWS:

[Not provided 🙁]