Simple logging package in Go.

$ go get github.com/cenkalti/log

• Log levels (DEBUG, INFO, NOTICE, WARNING, ERROR, CRITICAL)
• Different colored output for different levels (can be disabled)
• No global state in package
• Customizable logging handlers
• Customizable formatters
• Log to multiple backends concurrently

See https://github.com/cenkalti/log/blob/master/example/example.go