CI fixes

Author: franzpoeschel

examples/2_read_serial.py

@@ -14,7 +14,8 @@
     print("Read a Series with openPMD standard version %s" %
           series.openPMD)
 
-    print("The Series contains {0} iterations:".format(len(series.snapshots())))
+    print("The Series contains {0} iterations:".format(
+        len(series.snapshots())))
     for i in series.snapshots():
         print("\t {0}".format(i))
     print("")

src/binding/python/Series.cpp

@@ -404,7 +404,10 @@ not possible once it has been closed.
         std::tuple<py::object, std::string>,
         std::tuple<py::object, py::object>
 #endif
-        >::template call(cl);
+        >::template call<py::class_<Series, Attributable> &>(cl);
+    //                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+    // need to explicitly state template parameters, otherwise Clang on
+    // Windows does not understand that it really is a template
 
     cl.def("__bool__", &Series::operator bool)
         .def("__len__", [](Series const &s) { return s.iterations.size(); })