Fix euler_sweep returning kwargs not as NamedTuple

Author: Jack Dunham

src/solvers/region_plans/euler_plans.jl

@@ -2,6 +2,8 @@ using Graphs: dst, src
 using NamedGraphs.GraphsExtensions: default_root_vertex
 
 function euler_sweep(graph; nsites, root_vertex=default_root_vertex(graph), sweep_kwargs...)
+  sweep_kwargs = (; nsites, root_vertex, sweep_kwargs...)
+
   if nsites == 1
     vertices = euler_tour_vertices(graph, root_vertex)
     sweep = [[v] => sweep_kwargs for v in vertices]