> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lagerdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Version 0.3.8

> January 15, 2026

## <u>Features</u>

### Connection Manager for VISA Instruments

* Added global connection manager that coordinates VISA instrument connections across dispatchers
* Prevents "Resource busy" errors when the same physical device is accessed by multiple dispatchers
* Enables seamless switching between power supply and battery simulator modes on devices like the Keithley 2281S

### Test Result Infrastructure

* New `TestResult` schema for structured test data capture from `lager python` executions
* Support for saving results to file in JSON, JSONL, or CSV formats
* Webhook integration for posting test results to external services
* Rich metadata support including device info, measurements, and execution context

## <u>Improvements</u>

### Power Module Return Values

* Power supply and battery drivers now return numeric values when reading voltage/current
* Enables programmatic access to measurement values in addition to console output
* Updated Keithley, Keysight, EA, and Rigol drivers with consistent return value behavior

## <u>Installation</u>

To install this version:

```bash theme={null}
pip install lager-cli==0.3.8
```

To upgrade from a previous version:

```bash theme={null}
pip install --upgrade lager-cli
```

## Resources

[View Release on PyPI](https://pypi.org/project/lager-cli/0.3.8/)