Port many tests and fix small bugs revealed in Kalypso (passes 24/72) - tests have also revealed more extensive features not yet implemented, and I seem to have messed up a test or two so that the C++ version also fails a couple more (it's at 59/71 now). Will investigate

tests/test_chainedIndirectTemplates.krak

@@ -1,5 +1,5 @@
 import vector:*;
-import io:*;
+import simple_print:*;
 
 fun test<T>(a: vector<T>): T {
     return a.at(0);