May seem small but #FerrousSystems donating their
#rust spec is huge.
In #lua, it's helped so much to design things like #luajit and custom embeds. 
https://rustfoundation.org/media/ferrous-systems-donates-ferrocene-language-specification-to-rust-project/
The Rust FoundationFerrous Systems Donates Ferrocene Language Specification to Rust Project - The Rust FoundationRust 1.0 was published in May 2015. As the language approaches its 10th anniversary, Rust has become one of the fastest growing and most-loved languages [1] among developers, thanks to a combination of speed, safety and a vibrant community. Like any growing open source language, Rust has a considerable amount…