static var shared: Purchases Returns the already configured instance of
Purchases.static var isConfigured : Bool Returns
true if RevenueCat has already been initialized through configure(withAPIKey:) or one of is overloads.static var logLevel : LogLevel Used to set the log level. Useful for debugging issues with the lovely team @RevenueCat.
static var logHandler : LogHandler Set a custom log handler for redirecting logs to your own logging system.