Forgot to add filval.hpp

filval.hpp

@@ -1,12 +1,13 @@
 #ifndef filval_hpp
 #define filval_hpp
 #define FILVAL_VERSION_MAJOR @FILVAL_VERSION_MAJOR@
-#define FILVALTutorial_VERSION_MINOR @FILVAL_VERSION_MINOR@
+#define FILVAL_VERSION_MINOR @FILVAL_VERSION_MINOR@
 #include "value.hpp"
 #include "filter.hpp"
 #include "container.hpp"
 #include "dataset.hpp"
 #include "log.hpp"
 #include "argparse.hpp"
+#include "datafile.hpp"
 #include "api.hpp"
 #endif // filval_hpp