$ empty.md --report json
[exit 2]
--- stdout
{
  "version": "0.2",
  "files": [],
  "skipped": [
    {
      "file": "empty.md",
      "reason": "no prose found"
    }
  ],
  "errors": [],
  "summary": {
    "files": 1,
    "analyzed": 0,
    "passed": 0,
    "failed": 0,
    "skipped": 1,
    "errors": 0,
    "max_grade": null
  }
}
--- stderr
papa: skipped empty.md: no prose found
