spin is missing in the `Particle` struct

[mmikhasenko]

struct Particle
    pdgid::PDGID
    mass::MeasuredValue{_mass_dim}
    width::Union{Missing, MeasuredValue{_mass_dim}}
    charge::Quantity{T,_charge_dim,U} where {T<:Real, U<: Unitful.Units}
    isospin::Union{Missing, Rational{Int8}}
    parity::Union{Missing, Int8}
    gparity::Union{Missing, Int8}
    cparity::Union{Missing, Int8}
    antiprop::InvProperty
    rank::Int8
    status::PDGStatus
    name::String
    quarks::String
    latex::String
    glyph::String
end

https://github.com/JuliaPhysics/Corpuscles.jl/blob/master/src/Corpuscles.jl#L140-L156
What is rank, btw?

[tamasgal]

The rank is the number of baryon stars, as specified by the PDG.

Regarding the spin, we have helper functions J(), S(), L() and respectively jspin(), sspin(), lspin(), so those are not stored directly as fields.