use fmt.Print instead of print

The print built-in function formats its arguments in an
implementation-specific way and writes the result to standard error.
Print is useful for bootstrapping and debugging; it is not guaranteed to
stay in the language.

Also this stupid thing prints to stderr

Author: datamuc

pkg/checker/checker.go

@@ -45,7 +45,7 @@ var (
 func CheckMain(args []string) int {
 	state, msg, collection, _ := Check(args)
 
-	print(GenerateStdout(state, msg, collection))
+	fmt.Print(GenerateStdout(state, msg, collection))
 
 	return state.Code
 }