title: JSON schema validation
body: <p>Is there a stable library that can validate JSON against a <a href="https://datatracker.ietf.org/doc/html/draft-zyp-json-schema-02" rel="nofollow noreferrer">schema</a>?</p>
  <p><a href="http://json-schema.org" rel="nofollow noreferrer">json-schema.org</a> provides a <a href="http://json-schema.org/implementations.html" rel="nofollow noreferrer">list of implementations</a>.  Notably C and C++ are missing.</p>
  <p>Is there a reason I can't easily find a C++ JSON schema validator?<br />
  Doesn't anyone else want a quick way to validate incoming JSON files?</p>