Bugfixes:
- Add missing constructor (#424)
- Fix cached streams (#427)
- Sanitize value of User-Agent header (#429)
Feature Additions:
- Improve MessageTemplates public methods (#426)
- Add customizable interval in RequestSenderTimer (#428)
- Allow usage of custom FirebaseMessagingService (#432)
- Add method for downloading inbox messages (#434)
Performance Improvements:
- RequestSender refactoring (#421)
- Refactor HTTP layer (#423)
- Refactor batching of requests (#425)
