vlt-sphere - version 1.5
- Add missing check of background for the IRDIS/LSS wavelength calibration (6ae1ad4)
- Fix issues related to units in IFS class (9d9d313, 342af83)
- Fix typo in half-wave plate keywords extraction following change by ESO in June 2021 (1e60094)
- Fix error in call to the IFS sph_ifs_wave_calib esorex recipe (3f6a6e9)
- Minor fix in logs (e5cc6a2)