message: Make features disabled by default
  So we can then put them in labs on /develop & others can enable
  them as desired.
diff: @@ -193,7 +193,7 @@ export default {
  isFeatureEnabled: function(featureId: string): boolean {
  const featuresConfig = SdkConfig.get()['features'];
  - let sdkConfigValue = 'labs';
  + let sdkConfigValue = 'disable';
  if (featuresConfig && featuresConfig[featureId] !== undefined) {
  sdkConfigValue = featuresConfig[featureId];
  }
  