Agent - 1.0.0

## [1.0.0] - March 26th, 2020
- Update documentation and examples
- Add response body for override and track
- Add userId in /activate response
- Require userId in /activate request
- Add python integration test suite
- Add route handler and serve /openapi.yaml
- Improve logging from the SDK

https://github.com/optimizely/agent/releases/tag/v1.0.0