I appears that `IdentityFileEntry.into_identity` and `.to_recipient` are `pub(crate)`, so I can't use them in my own crate. https://github.com/str4d/rage/blob/f84af2c069514ed61392597349d945680c51b074/age/src/identity.rs#L22 Is there a specific reason for that or could they be made `pub`?