[NonGNU ELPA] Ws-Butler version 0.7

[ELPA update]

Version 0.7 of package Ws-Butler has just been released in NonGNU ELPA.
You can now find it in M-x list-packages RET.

Ws-Butler describes itself as:

  =========================================
  Unobtrusively remove trailing whitespace.
  =========================================

More at https://elpa.nongnu.org/nongnu/ws-butler.html

## Summary:

  [![Build 
Status](https://travis-ci.org/lewang/ws-butler.png)](http://travis-ci.org/lewang/ws-butler)
  [![NonGNU 
ELPA](https://elpa.nongnu.org/nongnu/ws-butler.svg)](https://elpa.nongnu.org/nongnu/ws-butler.html)

  ## ws-butler -- an unobtrusive way to trim spaces from end of line

  - Only lines touched get trimmed.  If the white space at end of buffer is
    changed, then blank lines at the end of buffer are truncated respecting
    `require-final-newline`.

  - Trimming only happens when saving.

  ## What does unobtrusive mean?

  The user is not made explicitly aware when trimming happens.  You keep working
  and the butler takes care of whitespace for you.

## Recent NEWS:

[Not provided 🙁]