Special case .tld in formatters?

[nirvdrum]

One thing that keeps giving me problems is that the lowercase function places spaces in front of dots. If I want to type a URL into a web browser or an SSH session, it becomes very difficult to do properly on my first pass.

For example, if I say "lowercase Google dot com", it'll come out as "google .com". And the "delete extra space" helper doesn't seem to catch this very well, deleting the "." rather than the space.

[poppe1219]

I added a small fix for this. I hadn't noticed this behavior.