AppInfo stores strings incorrectly

[kotauskas]

The AppInfo struct stores the &'static str type, which fails miserably if any of the fields are borrowed from an owned String. It should be changed to use an explicit generic lifetime parameter and store the string slices with that lifetime.

[daboross]

I don't think this wrong, it's just not fully general. I agree that it would be better if it were generic, but the current code won't cause any bugs, and can still function perfectly well with compile-time-known strings.