Added handling of comment decorators (skip, note) in sequence diagram comments (#194)

tests/t20038/include/t20038.h

@@ -0,0 +1,14 @@
+#pragma once
+
+namespace clanguml {
+namespace t20038 {
+
+template <typename T> T add_impl(T a, T b) { return a + b; };
+
+template <typename T> T add(T a, T b)
+{
+    // Invoke 'add' implementation
+    return add_impl(a, b);
+};
+}
+}