Comply with Golang semantic import versioning (#630)

* Code: compatible with semantic import versioning

* Tools & Docs: compatible with semantic import versioning

* Clean go.mod & go.sum

pkg/auth/hmac_test.go

@@ -3,15 +3,16 @@ package auth
 import (
 	"database/sql"
 	"fmt"
+	"testing"
+	"time"
+
 	"github.com/DATA-DOG/go-sqlmock"
-	model "github.com/HFO4/cloudreve/models"
-	"github.com/HFO4/cloudreve/pkg/conf"
-	"github.com/HFO4/cloudreve/pkg/util"
+	model "github.com/cloudreve/Cloudreve/v3/models"
+	"github.com/cloudreve/Cloudreve/v3/pkg/conf"
+	"github.com/cloudreve/Cloudreve/v3/pkg/util"
 	"github.com/gin-gonic/gin"
 	"github.com/jinzhu/gorm"
 	"github.com/stretchr/testify/assert"
-	"testing"
-	"time"
 )
 
 var mock sqlmock.Sqlmock