v0.6.3

New Features

Association solver is now faster for small association matrices.
Michelsen TP-Flash: in case of valid K values but single phase rachford-rice, the procedure will assume bubble or dew point as a first iteration.
split_model now works for ClapeyronParam,Symbol,Number,AbstractString,Tuple,Missing and Nothing. before those could only be splitted if inside an EoSModel.
New function: split_model_binaries, that returns a list of all binary combinations of an n-component model.
lb_volume now has a three-arg version: lb_volume(model,T,z).