chore: bump module path to v16

Update Go module path from github.com/kovetskiy/mark to
github.com/kovetskiy/mark/v16 across all packages and imports,
following Go module versioning conventions for major versions >= 2.

Also update README installation instructions and version string.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: mrueg

README.md

@@ -778,13 +778,13 @@ brew install mark
 ### Go Install / Go Get
 
 ```bash
-go install github.com/kovetskiy/mark/cmd/mark@latest
+go install github.com/kovetskiy/mark/v16/cmd/mark@latest
 ```
 
 For older versions
 
 ```bash
-go get -v github.com/kovetskiy/mark/cmd/mark
+go get -v github.com/kovetskiy/mark/v16/cmd/mark
 ```
 
 ### Releases
@@ -818,7 +818,7 @@ USAGE:
    mark [global options]
 
 VERSION:
-   v15.2.0@1c82927c11a2999a39e5052aae6d2c65a201260c
+   v15.5.0@9a26f657c7f2d708ae53722cad03b048c72c9db2
 
 DESCRIPTION:
    Mark is a tool to update Atlassian Confluence pages from markdown. Documentation is available here: https://github.com/kovetskiy/mark

attachment/attachment.go

@@ -16,8 +16,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/kovetskiy/mark/confluence"
-	"github.com/kovetskiy/mark/vfs"
+	"github.com/kovetskiy/mark/v16/confluence"
+	"github.com/kovetskiy/mark/v16/vfs"
 	"github.com/reconquest/karma-go"
 	"github.com/reconquest/pkg/log"
 )

cmd/mark/main.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/kovetskiy/mark/util"
+	"github.com/kovetskiy/mark/v16/util"
 	"github.com/reconquest/pkg/log"
 	"github.com/urfave/cli/v3"
 )

d2/d2.go

@@ -13,7 +13,7 @@ import (
 	"github.com/chromedp/cdproto/dom"
 	"github.com/chromedp/chromedp"
 
-	"github.com/kovetskiy/mark/attachment"
+	"github.com/kovetskiy/mark/v16/attachment"
 	"github.com/reconquest/pkg/log"
 
 	"oss.terrastruct.com/d2/d2graph"

d2/d2_test.go

@@ -5,7 +5,7 @@ import (
 	"strconv"
 	"testing"
 
-	"github.com/kovetskiy/mark/attachment"
+	"github.com/kovetskiy/mark/v16/attachment"
 	"github.com/stretchr/testify/assert"
 )
 

go.mod

@@ -1,4 +1,4 @@
-module github.com/kovetskiy/mark
+module github.com/kovetskiy/mark/v16
 
 go 1.25.0
 

macro/macro.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 	"text/template"
 
-	"github.com/kovetskiy/mark/includes"
+	"github.com/kovetskiy/mark/v16/includes"
 	"github.com/reconquest/karma-go"
 	"github.com/reconquest/pkg/log"
 	"github.com/reconquest/regexputil-go"

mark.go

@@ -14,16 +14,16 @@ import (
 	"time"
 
 	"github.com/bmatcuk/doublestar/v4"
-	"github.com/kovetskiy/mark/attachment"
-	"github.com/kovetskiy/mark/confluence"
-	"github.com/kovetskiy/mark/includes"
-	"github.com/kovetskiy/mark/macro"
-	markmd "github.com/kovetskiy/mark/markdown"
-	"github.com/kovetskiy/mark/metadata"
-	"github.com/kovetskiy/mark/page"
-	"github.com/kovetskiy/mark/stdlib"
-	"github.com/kovetskiy/mark/types"
-	"github.com/kovetskiy/mark/vfs"
+	"github.com/kovetskiy/mark/v16/attachment"
+	"github.com/kovetskiy/mark/v16/confluence"
+	"github.com/kovetskiy/mark/v16/includes"
+	"github.com/kovetskiy/mark/v16/macro"
+	markmd "github.com/kovetskiy/mark/v16/markdown"
+	"github.com/kovetskiy/mark/v16/metadata"
+	"github.com/kovetskiy/mark/v16/page"
+	"github.com/kovetskiy/mark/v16/stdlib"
+	"github.com/kovetskiy/mark/v16/types"
+	"github.com/kovetskiy/mark/v16/vfs"
 	"github.com/reconquest/karma-go"
 	"github.com/reconquest/pkg/log"
 )

markdown/markdown.go

@@ -4,11 +4,11 @@ import (
 	"bytes"
 	"slices"
 
-	"github.com/kovetskiy/mark/attachment"
-	cparser "github.com/kovetskiy/mark/parser"
-	crenderer "github.com/kovetskiy/mark/renderer"
-	"github.com/kovetskiy/mark/stdlib"
-	"github.com/kovetskiy/mark/types"
+	"github.com/kovetskiy/mark/v16/attachment"
+	cparser "github.com/kovetskiy/mark/v16/parser"
+	crenderer "github.com/kovetskiy/mark/v16/renderer"
+	"github.com/kovetskiy/mark/v16/stdlib"
+	"github.com/kovetskiy/mark/v16/types"
 	"github.com/reconquest/pkg/log"
 	mkDocsParser "github.com/stefanfritsch/goldmark-admonitions"
 	"github.com/yuin/goldmark"

markdown/markdown_test.go

@@ -10,10 +10,10 @@ import (
 	"strings"
 	"testing"
 
-	mark "github.com/kovetskiy/mark/markdown"
-	"github.com/kovetskiy/mark/stdlib"
-	"github.com/kovetskiy/mark/types"
-	"github.com/kovetskiy/mark/util"
+	mark "github.com/kovetskiy/mark/v16/markdown"
+	"github.com/kovetskiy/mark/v16/stdlib"
+	"github.com/kovetskiy/mark/v16/types"
+	"github.com/kovetskiy/mark/v16/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/urfave/cli/v3"
 )