Add Arnau Orriols to Cargo.toml authors
[package]
name = "iota-streams"
version = "1.0.0"
-authors = ["Vlad Semenov <vlad.semenov@iota.org>", "Dyrell Chapman <dyrell.chapman@iota.org>", "Brord van Wierst <brord@iota.org>"]
+authors = ["Vlad Semenov <vlad.semenov@iota.org>", "Dyrell Chapman <dyrell.chapman@iota.org>", "Brord van Wierst <brord@iota.org>", "Arnau Orriols <arnau.orriols@iota.org"]
edition = "2018"
license = "Apache-2.0/MIT"
readme = "README.md"
