combine: Add option to modify page order
combine: Add option to modify page order

gareth8118/spreads,gareth8118/spreads,miloh/spreads,DIYBookScanner/spreads,adongy/spreads,adongy/spreads,adongy/spreads,jbaiter/spreads,DIYBookScanner/spreads,miloh/spreads,miloh/spreads,gareth8118/spreads,jbaiter/spreads,nafraf/spreads,nafraf/spreads,DIYBookScanner/spreads,nafraf/spreads,jbaiter/spreads