React-SDK - 2.0.0-alpha.2
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## [2.0.0-alpha.2] - April 3rd, 2020
### Breaking Changes
- Upgrade `@optimizely/optimizely-sdk` to 4.0.0-alpha.1. `Promise` polyfill no longer included. See [@optimizely/optimizely-sdk Release 4.0.0-alpha.1](https://github.com/optimizely/javascript-sdk/releases/tag/v4.0.0-alpha.1) for more details.