v0.9.66

What's Changed

• Introduce truss train subcommand, API stubs by @nnarayen in #1422
• Fix truss integration tests by @nnarayen in #1425
• implement internal_cache to enable node-level caching by @rcano-baseten in #1424
• Websocket support in chains (entrypoint only). by @marius-baseten in #1414
• Treat truss imports as first party, not third party by @nnarayen in #1426
• Support local truss source code, refactor common pydantic types by @nnarayen in #1427
• Support builder models in chains by @marius-baseten in #1420
• Release 0.9.66 by @basetenbot in #1431

Full Changelog: v0.9.65...v0.9.66