diff --git a/src/OptimalTransport.jl b/src/OptimalTransport.jl
index 5437daf1..d2797344 100644
--- a/src/OptimalTransport.jl
+++ b/src/OptimalTransport.jl
@@ -548,12 +548,11 @@ function ot_reg_cost(mu, nu, C, eps; reg_func="L2", method="lorenz", kwargs...)
         quadreg(mu, nu, C, eps; kwargs...)
     else
         @warn "Unimplemented"
-        nothing 
+        nothing
     end
     return dot(γ, C)
 end
 
-
 """
     quadreg(mu, nu, C, ϵ; θ = 0.1, tol = 1e-5,maxiter = 50,κ = 0.5,δ = 1e-5)
 
diff --git a/src/variational.jl b/src/variational.jl
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/src/variational.jl
@@ -0,0 +1 @@
+