It can easily happen that, for example, a workflow file contains an input version: ${{ matrix.julia-version }} while the strategy matrix only contains a key ${{ matrix.version }}. In that case, we want the action to fail, rather than trying to download julia from an URL that's missing parts and 404ing. We could fall back to the default but that means that builds silently do things differently than they're meant to, which is worse than failing the build.

• Display errors properly again (#38)
• Fix version range examples for ^1.3.0-0

• Add Privacy information about Pkg Telemetry
• Move third party notices and information to separate file

This should not affect users.

From now on, the action will be compiled to a single JS file using @zeit/ncc before distribution. This means that we do not have to distribute the entire node_modules directory anymore.