Update to use rand 0.8

The 0.8.x versions of the rand crate changed the API of the gen_range function used in the Guessing Game and other examples. This release contains updated code in listings.tar.gz that uses the 0.8.x series of rand.

Rust 2018 Print Edition

Corresponds to what was printed by No Starch Press with ISBN-13 9781718500440.

Download "listings.tar.gz" to get just the source code that appears in the listings in the book.