stripe-android v10.2.0

• #1275 Add support for launching PaymentSession from a Fragment
  • PaymentSession(Fragment)
• #1288 Upgrade Android Gradle Plugin to 3.5.0-rc02
• #1289 Add Fragment support to payment confirmation/authentication flow
  • Stripe#confirmPayment(Fragment, ConfirmPaymentIntentParams)
  • Stripe#authenticatePayment(Fragment, String)
  • Stripe#confirmSetupIntent(Fragment, ConfirmSetupIntentParams)
  • Stripe#authenticateSetup(Fragment, String)
• #1290 Convert samplestore app to Kotlin
• #1297 Convert example app to Kotlin
• #1300 Rename StripeIntentResult#getStatus() to StripeIntentResult#getOutcome()
• #1302 Create GooglePayConfig
• #1304 Create PaymentMethodCreateParams#createFromGooglePay()

See the changelog for more details.