fix module declaration and remove toml dependency (#178)

Author: natefinch

go.mod

@@ -1,5 +1,3 @@
-module github.com/natefinch/lumberjack
-
-require github.com/BurntSushi/toml v0.3.1
+module gopkg.in/natefinch/lumberjack.v2
 
 go 1.13

go.sum

@@ -1,2 +0,0 @@
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=

lumberjack_test.go

@@ -10,8 +10,6 @@ import (
 	"path/filepath"
 	"testing"
 	"time"
-
-	"github.com/BurntSushi/toml"
 )
 
 // !!!NOTE!!!
@@ -709,27 +707,6 @@ func TestJson(t *testing.T) {
 	equals(true, l.Compress, t)
 }
 
-func TestToml(t *testing.T) {
-	data := `
-filename = "foo"
-maxsize = 5
-maxage = 10
-maxbackups = 3
-localtime = true
-compress = true`[1:]
-
-	l := Logger{}
-	md, err := toml.Decode(data, &l)
-	isNil(err, t)
-	equals("foo", l.Filename, t)
-	equals(5, l.MaxSize, t)
-	equals(10, l.MaxAge, t)
-	equals(3, l.MaxBackups, t)
-	equals(true, l.LocalTime, t)
-	equals(true, l.Compress, t)
-	equals(0, len(md.Undecoded()), t)
-}
-
 // makeTempDir creates a file with a semi-unique name in the OS temp directory.
 // It should be based on the name of the test, to keep parallel tests from
 // colliding, and must be cleaned up after the test is finished.