Nix-build-uncached: released 1.0.0

nix-build-uncached is a tool to make nix-build more efficient when running CIs that are not nix-aware such as github actions or travis ci.
It will only build derivations that are not available in any binary cache.
With the 1.0.0 release I rewrote the way it will query for not built packages. Previously
nix-build-uncached was limited to attribute sets of packages. With this release it can support
arbitrary packages that are build-able by nix-build.