Node.js agent v4.3.0

Improvements

• Added nonce option for newrelic.getBrowserTimingHeader()

  This allows people to pass in a string to be injected as the nonce property of the generated script tag. Special thanks to João Vieira (@joaovieira) for contributing this feature!

• Expose the External segment on the http request instance for outbound calls.

Fixes

• Added check to mark Hapi 'onPreResponse' extensions as error handlers.

  Previously, the agent was unable to mark any Hapi errors as handled, even if they were, resulting in inaccurate reporting. This change assumes that 'onPreResponse' extensions act as error handlers, so errors are only reported if they persist to the final response.