(Reuters) - Saudi Aramco has finally kick-started its initial public offering (IPO), nearly four years after Crown Prince Mohammed bin Salman first presented the idea.Here are key events in the Saudi state oil giant's planned stock market debut.Nov 3, 2019 - Saudi Aramco announces its intention to float after Saudi Arabia's Capital Market Authority said its board had approved the company's application for the registration and offering of a proportion of its shares.Oct 18, 2019 - Saudi Aramco..