v2.2.0

What's new in v2.2.0:

• Updated dependencies to the lastest SDKs: iOS 3.5.9 and Android 2.8.4
• Updated Google Billing Dependency to 7.1.1
• Added new method attributeFromWeb(options: Partial<{apphud_user_id: string; email: string; apphud_user_email: string;}>): Promise<ApphudWebRestoreResult>;
• Added Promises to the following methods: start(options: StartProperties), startManually(options: StartProperties), logout().
• Android: purchase(props: ApphudPurchaseProps) method's offerToken parameter inside ApphudPurchaseProps is no longer required, as it falls back to the first available offer token, if not set.