message: Fix ExternalArray instantiation for DIM == 1
diff: @@ -69,6 +69,7 @@ public:
  *
  * \post size() == num_elements
  */
  + template <int UDIM = DIM, typename Enable = std::enable_if_t<UDIM != 1>>
  ExternalArray(T* data, const StackArray<IndexType, DIM>& shape, IndexType capacity)
  : axom::Array<T, DIM>()
  {
  @@ -96,6 +97,29 @@ public:
  this->m_data = data;
  }
  + /// \overload
  + template <int UDIM = DIM, typename Enable = std::enable_if_t<UDIM == 1>>
  + ExternalArray(T* data, IndexType size, IndexType capacity)
  + : axom::Array<T, DIM>()
  + {
  + SLIC_ASSERT(data != nullptr);
  +
  + this->m_num_elements = size;
  + this->m_capacity = capacity;
  +
  + if(this->m_num_elements > capacity)
  + {
  + SLIC_WARNING(fmt::format(
  + "Attempting to set number of elements greater than the available "
  + "capacity. (elements = {}, capacity = {})",
  + this->m_num_elements,
  + capacity));
  + this->m_capacity = this->m_num_elements;
  + }
  +
  + this->m_data = data;
  + }
  +
  /// @}
  /*!
  