Report more Puma errors

Added

• Report Puma low-level errors using the lowlevel_error reporter. This will report errors previously not caught by our instrumentation middleware.

Changed

• Log a warning when loader defaults are added after AppSignal has already been configured.

  Ruby

  # Bad
  Appsignal.configure # or Appsignal.start
  Appsignal.load(:sinatra)
   
  # Good
  Appsignal.load(:sinatra)
  Appsignal.configure # or Appsignal.start

• Rename the path and method transaction metadata to request_path and request_method to make it more clear what context this metadata is from. The path and method metadata will continue to be reported until the next major/minor version.

• Internal change to how OpenTelemetry metrics are sent.

Removed

• Drop support for Puma version 2 and lower.

Fixed

• Fix the error log message about our at_exit hook reporting no error on process exit when the process exits without an error.

View the Ruby gem v4.0.5 changelog for more information.