message: Fixes warning from clang compiler in primal::Polygon
  Misc: minor cleanup of doxygen comments.
diff: @@ -25,7 +25,7 @@ namespace primal
  template <typename T, int NDIMS>
  class Polygon;
  -/*! \brief Overloaded output operator for polygons */
  +/// \brief Overloaded output operator for polygons
  template <typename T, int NDIMS>
  std::ostream& operator<<(std::ostream& os, const Polygon<T, NDIMS>& poly);
  @@ -45,7 +45,7 @@ public:
  using PointType = Point<T, NDIMS>;
  public:
  - /*! Default constructor for an empty polygon */
  + /// Default constructor for an empty polygon
  Polygon() { }
  /*!
  @@ -62,23 +62,21 @@ public:
  m_vertices.reserve(numExpectedVerts);
  }
  - /*!
  - * \brief Constructor for a polygon with the given vertices
  - */
  + /// \brief Constructor for a polygon with the given vertices
  Polygon(const axom::Array<PointType>& vertices) { m_vertices = vertices; }
  - /*! Return the number of vertices in the polygon */
  - const int numVertices() const { return static_cast<int>(m_vertices.size()); }
  + /// Return the number of vertices in the polygon
  + int numVertices() const { return static_cast<int>(m_vertices.size()); }
  - /*! Appends a vertex to the list of vertices */
  + /// Appends a vertex to the list of vertices
  void addVertex(const PointType& pt) { m_vertices.push_back(pt); }
  - /*! Clears the list of vertices */
  + /// Clears the list of vertices
  void clear() { m_vertices.clear(); }
  - /*! Retrieves the vertex at index idx */
  + /// Retrieves the vertex at index idx
  PointType& operator[](int idx) { return m_vertices[idx]; }
  - /*! Retrieves the vertex at index idx */
  + /// Retrieves the vertex at index idx
  const PointType& operator[](int idx) const { return m_vertices[idx]; }
  /*!
  