Always available through the 2.7 and 3+ stdlib

Not required as `logging.NullHandler` is available on all supported python versions

mock was included in unittest in python 3.3

Initially proposed at #249

- Move the auth anchor to be above the correct section
- Add missing anchors so all sections have them
- Add blank line above the old_login anchor and use hyphen instead of _.

Seems to be a leftover. None of the functions are used, tested, or documented. Most aren't even compatible with py3.

Add append/prepend setting in save & use this to add touch

- Update copyright notice to reflect changes in recent years, remove date range
- Add title to make the license file more human-friendly

This fixes the warning:

DeprecationWarning: Specifying host as a tuple is deprecated as of mwclient 0.10.0. Please use the new scheme argument instead.

- Center title to match the logo
- Change logo image to the PNG version, as SVG seems to be unsupported by PyPI:
  https://pypi.org/project/mwclient/
- Remove Landscape.io badge, as the service doesn't seem to be working:
  - https://landscape.io/github/mwclient/mwclient
  - https://github.com/landscapeio/landscape-issues/issues
- Add alt attribute to logo image

Matching existing file styles; Using a max line length of 88 for python files, which seems to best match the existing loc and is the length suggested by `black`; Setting the .editorconfig file as the root.

Reformat and add max-line-length constraint to flake8 config.

The post edit cookies makes no sense for bots, but it seems like the PR
for https://phabricator.wikimedia.org/T211233 is not going to be merged,
so we have to work around it.

Closes #221

Allow specifying `uselang` with `Page.revisions()` and
`Site.usercontributions()` to get localized parsed comments with
`prop=parsedcomment`.

Breaking change: Change the `Site.ask()` method to produce less nested
output. Basically, change `yield {title: answer}` to `yield answer`. The
title is included in the answer object after all.