Java-SDK - 3.4.0

## [3.4.0]
January 27th, 2020

### New Features
- Added a new API to get project configuration static data.
- Call `getOptimizelyConfig()` to get a snapshot of project configuration static data.
- It returns an `OptimizelyConfig` instance which includes a datafile revision number, all experiments, and feature flags mapped by their key values.
- Added caching for `getOptimizelyConfig` - `OptimizelyConfig` object will be cached and reused for the lifetime of the datafile.
- For details, refer to our documentation page: [https://docs.developers.optimizely.com/full-stack/docs/optimizelyconfig-java](https://docs.developers.optimizely.com/full-stack/docs/optimizelyconfig-java).


https://github.com/optimizely/java-sdk/releases/tag/3.4.0