Fixed albedos of asteroids imaged by VLT/SPHERE to use Johnson-Cousins V, since the original source states that they were calculated from the V-band absolute magnitude
Added spectra for 10 Hygiea, 511 Davida and 704 Interamnia, this time as standalone files
Spectra of 16 Psyche are now also loaded from a file, with an option using the disk-integrated albedo added