Gecko Web Platform Update (2020-07-08)

Product highlights for the Gecko Web Platform over the past few weeks. JavaScript [Mike Conca] * The latest SpiderMonkey newsletter [1] has all of the latest info (and lots of it) * SharedArrayBuffers are back [2] for web developers to use WebAssembly [Mike Conca] * Reference types and bulk memory

Rust documentation update

Hi, I have updated the in-tree documentation on writing Rust code: - Adding Rust code - Writing Rust code - Testing & debugging Rust code