Let the user add rules for custom characters to the "Remove Fancy Typography"-table

[Glasses8448]

Let the user add rules for custom characters to "Remove Fancy Typography"
In some texts there might be some annoying charactes that aren't catched by the standart-rule-table. In my case, the problem it isn't the text, but the keyboard of my notebook. It doesn't have a key for the greater- and less-sign, which are often used while quoting. I would like to set a custom-rule:
> replaced by "

Thanks for your work. The website is awesome! :)