Mediapack

New

- Add Sutherland's model for air

New

- Add a json import utility
- Change short name of the JCAL model to 'eqfjcal'

New

- Fluid and EqFluidJCA now have a 'k' attribute for the wave number
- Fluid have 'K' and 'Z' attributes for the compressibility and impedance

New

- New unified access to rho and c for all media modelled as fluid

New

- new viscoelastic constitutive law
- new resource files: 2 poroelastic, 1 elastic (steel) and 1 rubber

Changed

- from_yaml can be imported from mediapack directly

First dev version.