OneSignal/OneSignal-Android-SDK 5.0.4 on GitHub

What's Changed

Update PropertiesModel's deserialization of tags to not use Model.initializeFromJson by @brismithers in #1884
Retrieve current ADM PurchasingListener assuming it returns a nullable. by @brismithers in #1888
Fix: Add synchronized blocks to prevent ConcurrentModificationException by @jennantilla in #1876
Update work-runtime dependency version by @jennantilla in #1890
General protection against exceptions that occur on a thread. by @brismithers in #1887

Full Changelog: 5.0.3...5.0.4