* Statistics popup:
** Add a section for invalid and timed out links when found
* Set default timeout to 15 seconds instead of 45 seconds
* Automatically retrieve addon version for options page
* Expand README with more personal rules for the exclude list
* Rephrase some options

* Rework statistics popup:
** Rephrase explanations in statistics popup
** Add icons to every category
** Add a conclusion icon, to see whether a page contains dead links (dead emoji) or all links are alive (monkey image)
** Broken links: rework to be proper links
** Remove test duration feature
* Use let instead of var
* Remove use of innerHTML in investigator.js

* Introduce ~ to match "more or less" which means parent elements also get checked
* Expand the README file
* Change the default skip links containing to ~logoff,~logout,~signoff

* Fix bug with localisations
* Fix bug with logout being triggered on MediaWiki sites
* Fix bug: Levenstein needs a blacklist, implemented for Special pages
on MediaWiki

Hotfix: keywords cause Link Investigator not to work, needs more investigation