v1.0.9: Add some needed exec options: (#99)
* Add some needed exec options: Run as a specific user/group Append specific env vars to the otherwise clean environment. Tests for everything * Simplify uid/gid by prepopulating with our euid/gid
* Add some needed exec options: Run as a specific user/group Append specific env vars to the otherwise clean environment. Tests for everything * Simplify uid/gid by prepopulating with our euid/gid