Javascript-SDK - 2.2.0
0 min
## [2.2.0] - September 26, 2018
### Fixed - Track and activate should not remove null attributes ([#168](https://github.com/optimizely/javascript-sdk/pull/168)) - Track attributes with valid attribute types ([#166](https://github.com/optimizely/javascript-sdk/pull/166)) - Prevent SDK from initializing if the datafile version in invalid ([#161](https://github.com/optimizely/javascript-sdk/pull/161)) - Updating lerna to latest version ([#160](https://github.com/optimizely/javascript-sdk/pull/160))
### Changed - Change invalid experiment key to debug level ([#165](https://github.com/optimizely/javascript-sdk/pull/165))