v3 spec availability

The hosted docs on the tradestation website: https://api.tradestation.com/docs/specification/ show `v3` documentation.

This repository and the hosted docs for it https://tradestation.github.io/api-docs/ only seem to include `v2` documentation and associated OpenAPI model.

Can we get the v3 model added here? Without that it's much more difficult to build accurate tooling or generate clients.