Fixed some bugs in Parser::firstSet and added a bit of caching. It still doesn't work quite right, though, there's some problem with nullable left recursion. However, it's better than it was, and I need to go to bed. More work later.

stdlib/util.krak

@@ -0,0 +1,12 @@
+
+template<T> T greater(T a, T b) {
+    if (a > b)
+        return a;
+    return b;
+}
+
+template<T> T lesser(T a, T b) {
+    if (a > b)
+        return b;
+    return a;
+}