feat: Add $empty_queue() method. fix: Queued tasks can
be moved to failed now.
feat: Change default of n_workers.
message_log and output_log arguments.mlr3. The mlr3/rush logger is a child of
the mlr3 logger and is used for logging messages from the
rush package.mirai package
now.$reconnect() method.Rush class was not exported.R6 package was not imported.