Enhancement Request for new --typos (suffix and prefix)

[aznowak]

I am using --brainwallet --passwordlist mode. Tokens are not good for me because I am using passwordlists with millions of passwords pre generated. I know that my password ends with %2dJOHN. It would help saving my computing time and disc space if I could use typos mode with suffix, for example:
--brainwallet --passwordlist --typos-suffix %2dJOHN
so the password being checked would be: password%2dJOHN