Dlog is a project mainly written in Go, it's free.
Provides a debug log. Similar to the log package (in fact, it uses it), but logs to stdout rather than stderr unless the error is fatal.
PACKAGE
package dlog import "github.com/wcspromoteam/dlog"
A simple debug logging package that provides facilities for logging things to a logfile.
FUNCTIONS
func Fatalf(format string, v ...interface{}) Output to stderr AND stdout
func Fatalln(v ...interface{}) Outputs to stderr AND stdout
func Printf(format string, v ...interface{}) Logs to stdout, which will end up in a log file.
func Println(v ...interface{}) Logs to stdout, which will end up in a log file.