--[[

	File and TCP logging with capped disk & memory usage.
	Written by Cosmin Apreutesei. Public domain.

	logging.log(severity, module, event, fmt, ...)
	logging.note(module, event, fmt, ...)
	logging.dbg(module, event, fmt, ...)
	logging.warnif(module, event, condition, fmt, ...)
	logging.logerror(module, event, fmt, ...)

	logging.args(...) -> ...
	logging.printargs(...) -> ...

	logging.env <- 'dev' | 'prod', etc.
	logging.deploy <- app deployment name
	logging.filter <- {severity->true}
	logging.censor <- f(severity, module, event, msg)

	logging:tofile(logfile, max_disk_size)
	logging:toserver(host, port, queue_size, timeout)

]]

See the source code for more info.