cxx-demo 0.0.4

Toy project from https://github.com/dtolnay/cxx
Documentation 
[build-dependencies.cxx-build]
version = "0.4"
[dependencies.cxx]
version = "0.4"

[package]
authors = ["David Tolnay <dtolnay@gmail.com>"]
description = "Toy project from https://github.com/dtolnay/cxx"
edition = "2018"
license = "MIT OR Apache-2.0"
name = "cxx-demo"
repository = "https://github.com/dtolnay/cxx"
version = "0.0.4"