• Change UnionPayCallback to include smsCodeRequired
• Change UnionPayCapabilities#isUnionPayEnrollmentRequired to UnionPayCapabilities#isSupported
• Upgrade Google Play Services to [9.0.0,10.0.0)
• Upgrade support annotations to [24.0.0,25.0.0)
• Upgrade build tools to 24.0.0
• Update compile and target API versions to 24
• Fix NullPointerException in AnalyticsIntentService