James Keatings netted a hat-trick as Hibernian maintained their formidable form with a 4-1 win at St Mirren in the Scottish Championship.Sean Kelly had given Saints an eighth-minute lead following a short corner but Jason Cummings levelled within two minutes with a low finish, scoring for the seventh successive game.Two goals inside four minutes from Keatings then put Hibs in the driving seat.Keatings drilled into the far corner following a quickly-taken free-kick in the 37th minute and added another by curling into the top corner after a flowing move.Substitute Lawrence Shankland hit a post for Saints before Keatings claimed the match ball from the penalty spot after Liam Henderson was brought down by Cameron Howieson.The win extends Hibs' unbeaten run in all competitions to 13, winning 12 of them, while Saints are still searching for their first home league victory.