Reuse existing SWHID string instead of re-serializing it in node_id()
This improves throughput of reading a CSV of SWHIDs by 10%.
Additionally, this changes OutputRecord structs, to avoid yet another serialization.
Staging instance, all changes can be removed at any time
This improves throughput of reading a CSV of SWHIDs by 10%.
Additionally, this changes OutputRecord structs, to avoid yet another serialization.