Optional cog "simplewriter" that enforces xkcd's simple writer in a text channel

[JoshuaS3]

When turned on and given a place to work in, this extra bit removes everything not found in the top ten hundred words and their other forms. This works the same as xkcd's simple writer.

When some not allowed words are put up or changed, that message is quickly removed from the place and this extra bit sends a message to the person who wrote it saying something like this:

This should lead to some pretty fun and interesting conversations.

[JoshuaS3]

should be my last commit on this branch

[JoshuaS3]

I lied

[landyacht]

This is a fantastic idea, but unfortunately the code appears to be written in Python, which is out of line with our policy. Please revise and submit a new PR. I am immeasurably disappointed.