Mark the XML lexer class as private
Mark the XML lexer class as private

I was supposed to mark this as private for 1.0 but completely forgot.

altmetric/oga,jeffreybaird/oga,jeffreybaird/oga,ttasanen/oga,ttasanen/oga,jeffreybaird/oga,altmetric/oga,dfockler/oga,ttasanen/oga,YorickPeterse/oga,ttasanen/oga,altmetric/oga,dfockler/oga,altmetric/oga,dfockler/oga,YorickPeterse/oga,altmetric/oga,YorickPeterse/oga,jeffreybaird/oga,jeffreybaird/oga,YorickPeterse/oga,dfockler/oga,YorickPeterse/oga,dfockler/oga,ttasanen/oga