On Thursday, Spirit Airlines unveiled plans to cut costs and raise cash amid bankruptcy reports.Its stock rose after it said it would sell $519 million of Airbus jets and cut staff.Spirit has faced challenges since its proposed merger with JetBlue was called off in March. Sign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. Read preview Thanks for signing up! Go to newsletter preferences Thanks for signing up! Access your favorite topics in a ...