Feature: link to a diff to new docs when looking at old version of docs #64
Description
Hei!
I had a look at the docs for an older version of the defined() function today, and wondered what was different in it from the current version of the defined() function.
I see there's a link there, saying "You are viewing the version of this documentation from Perl 5.14.2. View the latest version".
Suggestion: Add a link to a page showing the diff between the versions of a function!
This would be useful when upgrading an older codebase to a recent Perl (something with I guess is a thing now that the EU is basically requiring "everyone" to keep their software updated?)
Hope this is something you'll also find useful! 😄