National formatting of numbers

[M Somerville]

I'm planning to use this library, which looks great thanks, for parsing of user-entered phone numbers. It looks like this'll work well for converting their input into a canonical form for comparison/internal storage. I would also like to be able to then display the numbers in a national format for the chosen country - in libphonenumber this would mean using nationalPrefixFormattingRule and the nationalPrefix. Would this be something suitable for adding?