fun main(args: Array<String>) {
    println(
        Transaction(
            Money(3020),
            category = "Transportation",
            location = "Arian's",
            timestamp = "Jan 01, 2018 00:00"
        )
    )

    val t = Transaction.fromJSON(
        "{\"cost\": 2168," +
                " \"category\": \"Transportation\"," +
                " \"location\": \"Arian's\"," +
                " \"timestamp\": \"Jan 01, 2018 00:00\"}"
    )

    println(t)

    println(t.serialize())
}