Libby Lane, the Bishop of Stockport, made history when she became the first woman bishop in the Church of England exactly a year ago. This week she broke through another barrier, by becoming the first woman to have her portrait hung in the hall at her alma mater, St Peter’s College, Oxford, where she was an undergraduate in the 1980s.The master of St Peter’s, Mark Damazer, a former BBC Radio 4 controller, said that the governing body voted unanimously to commission portraits of Bish