Version 4.0.2

• Please check the updated Wiki for details about the CAS 4 release.
• Requires all apps to run on a minimum Android API level 23 to run. To adjust the API level, change the minSdk value in your app-level build.gradle file to 23 or higher.
• Added support for the Native Ad format.
• All ad formats are now managed using a CAS ID string with the new CASAppOpen, CASInterstitial, and CASRewarded ad objects.
  Read more about the new implementation below.
  Previously, ad management required working with a MediationManager instance.
  You can now preload and cache multiple instances of each ad format, reducing latency and improving ad display performance.
• All ad formats have OnImpressionListener to collect impression data via new AdContentInfo structure.
• The show(Activity?) method for screen ads no longer requires an Activity, but it is still recommended when possible. The CAS SDK will attempt to determine the last created Activity of your app.
• Added Autoload mode for CASAppOpen ad instance.
• Added automatic initialization of the Tenjin SDK when the API key is provided in the CAS SDK initialization parameters.
• AdError.getMessage() now provides more detailed error information.
  A single error code may include multiple detailed messages.
  All error code constants have been moved from AdError to AdErrorCode.
• Added a new adapter for the YSO Network.
• Added a new adapter for Prado Ads (Closed Beta). Contact your account manager if you would like to try this new ad network.
• The automatic display of App Return Ads replaced to new auto show mode for CASAppOpen and CASInterstitial ad instances. To enable this feature, use the isAutoshowEnabled property.
• All adapters have been updated for compatibility with the CAS 4 update. Read more about the adapter versions here.