[FEATURE] Ability to use custom logger in event logger

[Vladislav Trotsenko]

By default Truemail uses default logger class from Ruby stdlib, Logger. But nice to have an ability to override this behavior passing own class in logger configuration.

Truemail.configure do |config|
  config.logger = {
    logger_class: MyCustomLogger,
    tracking_event: :all,
    stdout: true,
    log_absolute_path: '/home/app/log/truemail.log'
    }
end

[Vladislav Trotsenko]

Already in the latest release.