LOS ANGELES (Reuters) – Country star Taylor Swift's latest single made a record-breaking entry in Wednesday's Billboard Digital Songs chart, scoring the biggest digital sales week ever for a song by a female artist. Swift's song "We Are Never Ever Getting Back Together," an infectious, punky country-pop anthem, quickly rose through the charts and gained strong radio play after its release last week, selling 623,000 downloads, according to Nielsen SoundScan. The song also hit the Billboard Country singles chart, as Swift's music has attracted fans of both country and pop. …