Configure semantic-release #36
Description
Every merge to master should invoke semantic-release, which will publish a package version to npm if appropriate.
Eventually we will add changelog maintenance to semantic-release via a plugin, but this has been cut from initial scope due to the complexity that our gpg-commit-signing requirement adds.
Remember that before we invoke semantic release, we need to tag our projects manually to set the initial version. Otherwise semantic-release will default to 1.0.0 for the initial version, which we would avoid if possible since we are in an alpha state.