There's a cleaner way to do this, commit to module formatter pending.

Revert "No longer need to reference 'version_added' in docs for these, as this was quite a while ago."

This reverts commit ff0a41d446a03f93aa57a6baa96c5333bea269ea.
Code to limit display of version_added attributions in modules for modules that are too old to call out this information.

This does not generically apply to new arguments added to existing modules, just the version_added attribute on the top level modules.