Fix to "typeid.kind". Conversion unsigned int -> enum fixed. @autoimport -> @builtin. Comparison macros. Bump to 0.2.21

test/test_suite/stdlib/priorityqueue.c3t

@@ -0,0 +1,32 @@
+// #target: macos-x64
+module test;
+import std::io;
+import std::math;
+import std::priorityqueue;
+
+define FooPriorityQueue = PriorityQueue<Foo>;
+
+fn void main()
+{
+
+	FooPriorityQueue agh;
+	agh.max = true;
+	agh.push(Foo { 3 });
+	agh.push(Foo { 101 });
+	agh.push(Foo { 10 });
+	while (try f = agh.pop()) io::printf("%s\n", f.x);
+}
+
+struct Foo
+{
+	int x;
+}
+
+fn bool Foo.less(Foo* x, Foo y) @inline
+{
+	return x.x < y.x;
+}
+
+// #expect: test.ll
+
+%PriorityQueue = type { %List, i8 }