v0.5.9

New Features

New EoS: Solid SAFT-VR Mie (SAFTVRSMie)
New EoS: Solid soft-SAFT (solidsoftSAFT)
New property: sublimation pressure. sublimation_pressure(model::CompositeModel,T)
New property: melting pressure. melting_pressure(model::CompositeModel,T)
New property: sublimation temperature. sublimation_temperature(model::CompositeModel,p)
New property: melting temperature. melting_temperature(model::CompositeModel,p)
New property: triple point. triple_point(model::CompositeModel)
CompositeModel was revamped to support more general equilibria. in particular it will be used to represent equilibria with Activity Models along with with Real Gases. As a result of these enhancements, CompositeModel now supports bubble_pressure,bubble_temperature,dew_pressure, and dew_temperature.
DETPFlash supports LLE equilibria with activity models

SAFTVRMie was allocating excesively because of unbound type parameter.
typos in pharmaPCSAFT
SanchezLacombe didn't set k correctly when passed as userlocations
CPA, SAFT equation of state and other EoS that implement association,don't need to specify bondvol and epsilon_assoc, when using non-associating species.
correct implementation of lb_volume for CPPCSAFT
better implementation of lb_volume for pharmaPCSAFT