Fixed minor bug in output SEDs

This minor release fixes an issue with the SEDs produced by egg-getsed when the components option was not used. In this case, the SEDs would contain duplicated values (each data point of the SED was present twice in the arrays). This has no impact on the science interpretation of the SEDs, but could perturb some algorithms which expect the wavelength axis to be strictly increasing. This bug is now fixed, and SEDs no longer contain duplicate values.