Convert metaframe definition to version v0.3
This route is a public api. Example CURL request:
curl -X POST -H "Content-Type: application/json" -d '{"version":"0.5","metadata":{"name":"Example animated input graph","author":"Dion Whitehead"},"inputs":{"x":{"type":"number"},"y":{"type":"number"}}}' https://module.metapage.io/convert/metaframe/v0.3