Case T-259/20: Judgment of the General Court of 17 February 2021 — Ryanair v Commission (State aid — French air transport market — Deferral of payment of civil aviation tax and solidarity tax on airline tickets due on a monthly basis during the period from March to December 2020 in the context of the Covid-19 pandemic — Decision not to raise any objections — Aid intended to make good the damage caused by an exceptional occurrence — Free provision of services — Equal treatment — Criterion of holding a licence issued by the French authorities — Proportionality — Article 107(2)(b) TFEU — Duty to state reasons)