1. University of Louisville, Department of Physics and Astronomy , 102 Natural Science Building, Louisville, KY 40292, USA
2. E.A.Milne Centre for Astrophysics, University of Hull , Cottingham Road, Kingston-upon-Hull HU6 7RX, UK
3. Australian Astronomical Optics, Macquarie University , 105 Delhi Rd, North Ryde, NSW 2113, Australia
4. Center for Theoretical Physics, Polish Academy of Sciences , al. Lotników 32/46, 02-668 Warsaw, Poland
5. Tartu Observatory, University of Tartu , Observatooriumi 1, 61602 Tõravere, Estonia
6. CUNY NYC College of Technology , 300 Jay Street, Brooklyn, NY 11201, USA
7. Center for Computational Astrophysics, Flatiron Institute , New York, NY 10010, USA
8. SRON Netherlands Institute for Space Research , Landleven 12, 9747 AD, Groningen, the Netherlands
9. Kapteyn Astronomical Institute, University of Groningen , Postbus 800, 9700 AV Groningen, the Netherlands
10. Ruhr University Bochum, Faculty of Physics and Astronomy, Astronomical Institute (AIRUB), German Centre for Cosmological Lensing , D-44780 Bochum, Germany
11. Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08544, USA
12. Netherlands eScience Center , Science Park 140, 1098 XG Amsterdam, the Netherlands