Announcing Rust 1.15

The Rust team has releasedversion 1.15 of the Rust programming language, which adds a custom derivefeature. "These kinds of libraries are extremely powerful, but relyon custom derive for ergonomics. While these libraries worked on Ruststable previously, they were not as nice to use, so much so that we oftenheard from users "I only use nightly because of Serde and Diesel." The useof custom derive is one of the most widely used nightly-only features. Assuch, RFC 1681 was opened in July of last year to support this use-case. The RFC was merged in August, underwent a lot of development and testing, and now reaches stable today!"