v5.9.0

Bug Fixes

• alipay: use correct pluginRef (#3081) (92d5764)
• firebase: add missing decorator to clearAllNotifications (#3059) (2fadb6b)
• in-app-purchase-2: add missing option to register function (#3063) (1fc0909)

Features

• calendar: add deleteEventById function (#3075) (5857b96)
• diagnostic: add DENIED_ONCE introduced by diagnostic v5 (#3071) (54ac2bf)
• sum-up: add plugin (#3080) (a4db080)
• unvired-cordova-sdk: add plugin (#3061) (9274083)