v1.7.0

• Use iOS Keychain internally to record purchases.
• Minor fixes for Dark Mode UI in Nami paywalls.
• Improved recognition of running environment to allow for more similar call flow between sandbox/simulator and production use.
• Add ability to create blocking paywalls.
• Removed internal checks for deprecated UIWebView in application.
• For simulator builds, bypassStorekit mode is automatically enabled to avoid confusion when testing purchases.
• Improved sending of purchase signals.
• Improved processing of multiple adjacent transactions from StoreKit.