Table of Contents broken on special characters

[AaronDMarasco]

At least on GitHub... I'm autogenerating the TOC and it thinks that the headings will include special characters, but GitHub strips them out. At a minimum, the following characters have broken the links my documentation:

• (
• )
• `
• .
• ,
• %

I think all of them should just be dropped, but I'm not 100% sure.