lots o fixes

examples/embed.go

@@ -0,0 +1,15 @@
+//go:build ignore
+
+package main
+
+import (
+	"log"
+)
+
+const program = `println("Hello World!")`
+
+func main() {
+	if err := monkey.ExecString(program, false, false); err != nil {
+		log.Fatal("error running program")
+	}
+}