Provide macros to access fields version, uuid, authors in `Project.toml at compile time.
module MyModule
using Tar
using PkgVersion
const VERSION = PkgVersion.@Version 0
const UUID = PkgVersion.@Uuid
const AUTHOR = PkgVersion.@Author "unknown@nowhere"
const VERSION_TAR = PkgVersion.Version(Tar)
endFile Project.toml must be readable in package directory.
Author returns the first string of field authors.