Rickard Nord

When values for tomorrow all contains null, the `tomorrow_valid`-flag should be `false`. Example of current behaviour: ``` tomorrow_valid: true tomorrow: - null raw_tomorrow: - start: '2022-01-28T00:00:00+01:00' end: '2022-01-28T01:00:00+01:00' value: null...

PR: https://github.com/CrossGeeks/AzurePushNotificationPlugin/pull/66

Noone has reviewed (and approved) it. @hectown, feel free to approve it if you are able to! :)