Update pyexcel-xls from 0.4.1 to 0.5.0
Update pyexcel-xls from 0.4.1 to 0.5.0
alphagov/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin