lastlog

A simple user crate designed to read /var/log/lastlog for retrieving last-login records on linux systems

The basic usage looks like:

```rust use lastlog::{searchuid, searchusername};

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

NOTE: this functionality will ONLY work on UNIX operating systems that support the /var/log/lastlog database