Support more logger methods and small changes

Added

• Add the Logger << method. This improves our compatibility with Ruby's Logger class implementation, making it usable in more scenarios.

Changed

• Explicitly return nil from public methods with no usable return value. We want to avoid the situation where Appsignal.start happens to return true and it is thought to mean that the gem started successfully.

  Methods updated:

  • Appsignal.start
  • Appsignal.stop
  • Appsignal.configure
  • Appsignal.forked
  • Appsignal.load

• Differentiate between process_request.rack events. Add the callback that triggered the event in the event title for debugging purposes.

• Improve the log message for the uneven timestack error. This will help the AppSignal team debug issues where events get closed when all events are already closed.

View the Ruby gem v4.5.6 changelog for more information.