arctic_night.jl needs a field model

[waywardpidgeon]

When trying the arctic_night.jl example I get

PS C:\Users\kab\cc\ccex01\ClimaOcean.jl\myexamples> julia --project arctic_night.jl
ERROR: LoadError: type BuoyancyForce has no field model
Stacktrace:
 [1] getproperty(x::BuoyancyForce{SeawaterBuoyancy{Float64, SeawaterPolynomials.BoussinesqEquationOfState{SeawaterPolynomials.TEOS10.TEOS10SeawaterPolynomial{Float64}, Float64}, Nothing, Nothing}, Oceananigans.Grids.NegativeZDirection}, f::Symbol)
   @ Base .\Base.jl:37
 [2] top-level scope
   @ C:\Users\kab\cc\ccex01\ClimaOcean.jl\myexamples\arctic_night.jl:32
in expression starting at C:\Users\kab\cc\ccex01\ClimaOcean.jl\myexamples\arctic_night.jl:32

Any ideas? What am I missing here?

[glwagner]

Nice find! Recently we changed the syntax of Buoyancy.model to BuoyancyForce.formulation. Check out #325.