v4.0.0

This is a new major release with many features and fixes. See the upgrade
guide for
more information on how to update your integration, or the integration
guide to get started.

Enhancements

• Unity/C# errors are now automatically detected and reported on Windows and any
  other Unity platform (not including native crashes)
• Exceptions logged on background threads via the Unity Debug.Log API are
  now automatically detected and reported in additional to exceptions detected
  on the main thread.
• Support for session and stability tracking
• Support for logging detailed breadcrumbs