As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
We have released APS SDK 2.2.1 including support APS 2.3.7:
https://github.com/OpenPj/alfresco-process-services-project-sdk/releases/tag/v2.2.1
APS SDK is kindly supported by Zia Consulting.
Hope this helps