v3.7.2

Changed

• Add a null check for Severity to the notify override method. #214

• Created Serializer interface, allowing for implementation of a custom serializer. #219

• Updated ScheduleTaskConfiguration configureTask method to properly handle wrapped/proxied objects. #218

Bug Fixes

• Update BugsnagImportSelector to allow major versions that do not have a minor version.
  fixes issue #211.
  #213