fix authors.
[package]
name = "stronghold-engine"
version = "0.3.0"
-authors = [ "tensorprogramming <tensordeveloper@gmail.com>" ]
+authors = [ "IOTA Stiftung", "tensorprogramming <tensordeveloper@gmail.com>" ]
edition = "2018"
license = "Apache-2.0"
readme = "README.md"
