Update style of graph and partition datastructures

include/gp-bnb/graph.hpp

@@ -12,10 +12,12 @@ public:
      *  @param  Adjacency lists
      */
     graph(std::vector<std::vector<unsigned int>> a);
+
     /** @brief  Returns the number of vertices of the graph
      *  @return Number of vertices
      */
     unsigned int num_vertices() const;
+    
     /** @brief  Provides access to the adjacency of a vertex  
      *  @param  Vertex Id
      *  @return Adjacency of the vertex

include/gp-bnb/partition.hpp

@@ -11,20 +11,24 @@ using vertex_id = unsigned int;
 class partition {
 public:
     enum subgraph { sg_a = -1, sg_b = 1, none = 0 };
+
     /** @brief  Initializes an empty partition
      *  @param  Pointer to the graph to be partitioned
      */
     partition(graph* g);
+    
     /** @brief  Returns the number of vertices of an element of the partition
      *  @param  Subgraph A, B or none
      *  @return Number of vertices of sg
      */
     unsigned int num_vertices(subgraph sg);
+    
     /** @brief  Assigns a vertex to a subgraph
      *  @param  Vertex Id
      *  @param  Subgraph A or B
      */
     void assign_vertex(vertex_id v, subgraph sg); 
+    
     /** @brief  Reverts the assignment of a vertex to a subgraph
      *  @param  Vertex Id
      */