Export SummaryState from EclipseIO object

opm/output/eclipse/EclipseIO.hpp

@@ -41,6 +41,7 @@ namespace Opm {
 class EclipseState;
 class SummaryConfig;
 class Schedule;
+class SummaryState;
 
 /*!
  * \brief A class to write the reservoir state and the well state of a
@@ -224,6 +225,8 @@ public:
     EclipseIO( const EclipseIO& ) = delete;
     ~EclipseIO();
 
+    const SummaryState& summaryState() const;
+
 private:
     class Impl;
     std::unique_ptr< Impl > impl;