nix-review: 1.0.2 -> 1.0.4

- also accept the full url of pull request i.e.
  https://github.com/NixOS/nixpkgs/pull/54323
- stream-parse nix-env's eval output
- fix logs for failed builds issued by remote builders
- prepare code for overlays like: https://github.com/NixOS/nixpkgs/pull/53934