add a new simple, builtin requestid middleware (makes use of the Context.SetID/GetID methods too)

Former-commit-id: d46bce7c1964adada01934aa95daf389c141defc

sessions/config.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/kataras/iris/v12/context"
 
-	uuid "github.com/iris-contrib/go.uuid"
+	"github.com/google/uuid"
 )
 
 const (
@@ -71,7 +71,7 @@ func (c Config) Validate() Config {
 
 	if c.SessionIDGenerator == nil {
 		c.SessionIDGenerator = func(context.Context) string {
-			id, _ := uuid.NewV4()
+			id, _ := uuid.NewRandom()
 			return id.String()
 		}
 	}

sessions/sessions.go

@@ -15,7 +15,7 @@ func init() {
 // on a Context, which returns a *Session, type.
 // It performs automatic memory cleanup on expired sessions.
 // It can accept a `Database` for persistence across server restarts.
-// A session can set temporarly values (flash messages).
+// A session can set temporary values (flash messages).
 type Sessions struct {
 	config   Config
 	provider *provider