To address #72, interp1d is now the choice for calculating luminosity distance
To address #71 , The way args are passed to luminosity function from firesong_simulation is changed. Now, it's done through some luminosity function specific kwargs, for example, lg_width for the width of log normal. The kwargs can also pass arguments to evolution if such need arises.
Switch the setup to use python 3.8 and numpy 1.22 for security reason
lg_widthfor the width of log normal. The kwargs can also pass arguments to evolution if such need arises.