Solution: I've replaced `timer()` with `setTimer()...

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[hastebrot]

Solution: I've replaced timer() with setTimer() to allow the period == 0 use-case:

private inline fun setTimer(name: String,
                            initialDelay: Long = 0,
                            period: Long = 0,
                            crossinline action: TimerTask.() -> Unit): Timer {
    val timer = Timer(name, true)
    val timerTask = timerTask(action)
    when {
        period > 0 -> timer.schedule(timerTask, initialDelay, period)
        else -> timer.schedule(timerTask, initialDelay)
    }
    return timer
}

private fun clearTimer(timer: Timer) = timer.cancel()