XKCD Substitutions - COMPLETE

Now 142% more suitable for human consumption with the release of v1.0!

This extension replaces words and phrases in all web pages according to both XKCD Substitutions comics (https://xkcd.com/1288/ and http://xkcd.com/1625/).

While other extensions do exist which implement one or both of these Substitutions, I built this extension for personal use because I felt like some things could be done more intelligently. For instance, this extension will turn "car" into "cat," but it won't turn "cartoon" into "cattoon."