Fix import paths

mail/mdtext/text.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 
 	"github.com/bbrks/wrap"
-	bf "gopkg.in/russross/blackfriday.v2"
+	bf "github.com/russross/blackfriday/v2"
 )
 
 // The textWriter can indent and wrap individual "blocks" of text,

mail/mdtext/text_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
-	bf "gopkg.in/russross/blackfriday.v2"
+	bf "github.com/russross/blackfriday/v2"
 )
 
 var (

mail/template/template.go

@@ -10,7 +10,7 @@ import (
 	"text/template"
 
 	"git.autistici.org/ai3/go-common/mail/mdtext"
-	bf "gopkg.in/russross/blackfriday.v2"
+	bf "github.com/russross/blackfriday/v2"
 )
 
 var (

userenckey/container.go

@@ -7,7 +7,7 @@ import (
 	"io"
 
 	"github.com/lunixbochs/struc"
-	"github.com/miscreant/miscreant-go"
+	"github.com/miscreant/miscreant.go"
 	"golang.org/x/crypto/argon2"
 )