Hi @fjblau ,
@Ashraf has made a TigerGraph schema management tool called tg_migrator which you can check out! Schema Management with tg_migrator
As for production deployment, I’ve seen client who has a deployment process for schema change, though that was proprietary.
You can also make your own tools as well as you see fit. 
If other folks in this community have tools around this area, we would love to see it!
Best,
Supawish Limprasert (Jim)
Solution Engineer, TigerGraph