Merge branch 'arithmetictestsuite-constructors' into 'master'

[ArithmeticTestSuite] Inherit constructors from TestSuite.

See merge request !512

dune/common/test/arithmetictestsuite.hh

@@ -32,6 +32,9 @@ namespace Dune {
     public TestSuite
   {
   public:
+    // inherit all constructors from TestSuite
+    using TestSuite::TestSuite;
+
     //! tag denoting any arithmetic type
     struct Arithmetic            {};
     //! tag denoting integral types