lastlog

Simple crate for retrieving latest last-login records on a UNIX system

The basic usage looks like: ```rust,norun use lastlog::{searchuid, search_username};

fn main() { let result1 = searchuid(1000); let result2 = searchusername("foo"); } ```

NOTE: this functionality is only designed to work with UNIX systems that support either utmp/wtmp of lastlog database types.