Set correct default log levels

Fixes #16

default_notepad.go

diff --git a/default_notepad.go b/default_notepad.go
index ea8003d..e2293f4 100644
--- a/default_notepad.go
+++ b/default_notepad.go
@@ -41,7 +41,7 @@
 }
 
 func init() {
-	defaultNotepad = NewNotepad(LevelInfo, LevelTrace, os.Stdout, ioutil.Discard, "", log.Ldate|log.Ltime)
+	defaultNotepad = NewNotepad(LevelError, LevelWarn, os.Stdout, ioutil.Discard, "", log.Ldate|log.Ltime)
 	reloadDefaultNotepad()
 }