Added initial seqence diagram support

tests/test_example.cpp

@@ -1,19 +1,11 @@
 #define CATCH_CONFIG_MAIN
 
 #include "catch.hpp"
-#include <source_file.hpp>
 #include <string>
 #include <complex>
 
 TEST_CASE("Test add", "[unit-test]"){
     // not very good tests, but oh well...
-    REQUIRE(add(2, 3) == 5);
-    REQUIRE(add(2., 3.) == 5.);
-    REQUIRE(add(0, 0) == 0);
+    REQUIRE(2+5 == 5);
     std::cout << "RUNNING TEST" << std::endl;
-    std::complex<double> a(2., 3.);
-    std::complex<double> b(-1., 20.);
-    std::complex<double> c(1., 23.);
-    REQUIRE(add(a,b) == c);
-
 }