2019-09-12 1.0.4

• Increase timeout value from 20 seconds to 60 seconds when settling messages.
  PR 4907 related to bug 3764
• Allow time to receive a flow frame from service when sender is not in a sendable state.
  PR 4908 related to bug 4764
• Use user provided timeout value for the entirety of the receiveMessages() method.
  PR 4933 related to bug 4748
• Improve logging when not able to settle a message due to not having access to the right receiver. PR 4943
• Fix bug where the library consistently fails to settle a message due to having lost reference to the right receiver. PR 4947