---
title: Go-SDK - v1.0.0-beta4
slug: feature-experimentation/release-notes/go-sdk-v1-0-0-beta4
docTags: 
createdAt: 2026-07-20T15:45:31.812Z
---

\## \[1.0.0-beta4] - October 28th, 2019

\### New Features
\- feat(logger): Expand LogConsumer interface to have explicit field mapping. \[#147]\([https://github.com/optimizely/go-sdk/pull/147](https://github.com/optimizely/go-sdk/pull/147))

\### Bug Fixes
\- refac(client): Revise how the client handles and returns errors. \[#151]\([https://github.com/optimizely/go-sdk/pull/151](https://github.com/optimizely/go-sdk/pull/151))

[https://github.com/optimizely/go-sdk/releases/tag/v1.0.0-beta4](https://github.com/optimizely/go-sdk/releases/tag/v1.0.0-beta4)