0.8.39

Release 0.8.39: Sync functionality and CLI

- Humanloop SDK can now use local .prompt and .agent file definitions. By default, the local worskpace is placed in the `humanloop` directory of your project
- You can clone Files from the Humanloop workspace into your local one. After cloning, the local will mirror the directory structure on remote.
- To use local files, refer to them by path in `call` and `log` operations
- In code, the feature can be toggled via the `use_local_files` flag in the Humanloop client constructor
- The feature can also be accessed via CLI: to clone Files, use the `humanloop pull` CLI command