Make papers into modules, instead of structs; add StartupCostsFormulation

src/model/formulations/DamKucRajAta2016/ramp.jl

@@ -5,7 +5,7 @@
 function _add_ramp_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::DamKucRajAta2016,
+    formulation::DamKucRajAta2016.Ramping,
 )::Nothing
     # TODO: Move upper case constants to model[:instance]
     RESERVES_WHEN_START_UP = true

src/model/formulations/DamKucRajAta2016/structs.jl

@@ -8,4 +8,10 @@ Formulation described in:
     Damcı-Kurt, P., Küçükyavuz, S., Rajan, D., & Atamtürk, A. (2016). A polyhedral
     study of production ramping. Mathematical Programming, 158(1), 175-205.
 """
-struct DamKucRajAta2016 <: RampingFormulation end
+module DamKucRajAta2016
+
+import ..RampingFormulation
+
+struct Ramping <: RampingFormulation end
+
+end