*: migration from gopkg to go modules

Author: mcuadros

.travis.yml

@@ -4,7 +4,7 @@ go:
   - "1.11"
   - "1.12"
 
-go_import_path: gopkg.in/src-d/go-git.v4
+go_import_path: github.com/go-git/go-git/v5
 
 env:
   - GIT_VERSION=master

Makefile

@@ -15,7 +15,7 @@ COVERAGE_REPORT = coverage.txt
 COVERAGE_MODE = atomic
 
 ifneq ($(origin CI), undefined)
-	WORKDIR := $(GOPATH)/src/gopkg.in/src-d/go-git.v4
+	WORKDIR := $(GOPATH)/src/github.com/go-git/go-git/v5
 endif
 
 build-git:

README.md

@@ -1,9 +1,9 @@
 ![go-git logo](https://cdn.rawgit.com/src-d/artwork/02036484/go-git/files/go-git-github-readme-header.png)
-[![GoDoc](https://godoc.org/gopkg.in/src-d/go-git.v4?status.svg)](https://godoc.org/github.com/src-d/go-git) [![Build Status](https://travis-ci.org/src-d/go-git.svg)](https://travis-ci.org/src-d/go-git) [![Build status](https://ci.appveyor.com/api/projects/status/nyidskwifo4py6ub?svg=true)](https://ci.appveyor.com/project/mcuadros/go-git) [![codecov.io](https://codecov.io/github/src-d/go-git/coverage.svg)](https://codecov.io/github/src-d/go-git) [![Go Report Card](https://goreportcard.com/badge/github.com/src-d/go-git)](https://goreportcard.com/report/github.com/src-d/go-git)
+[![GoDoc](https://godoc.org/github.com/go-git/go-git/v5?status.svg)](https://godoc.org/github.com/src-d/go-git) [![Build Status](https://travis-ci.org/src-d/go-git.svg)](https://travis-ci.org/src-d/go-git) [![Build status](https://ci.appveyor.com/api/projects/status/nyidskwifo4py6ub?svg=true)](https://ci.appveyor.com/project/mcuadros/go-git) [![codecov.io](https://codecov.io/github/src-d/go-git/coverage.svg)](https://codecov.io/github/src-d/go-git) [![Go Report Card](https://goreportcard.com/badge/github.com/src-d/go-git)](https://goreportcard.com/report/github.com/src-d/go-git)
 
 *go-git* is a highly extensible git implementation library written in **pure Go**.
 
-It can be used to manipulate git repositories at low level *(plumbing)* or high level *(porcelain)*, through an idiomatic Go API. It also supports several types of storage, such as in-memory filesystems, or custom implementations thanks to the [`Storer`](https://godoc.org/gopkg.in/src-d/go-git.v4/plumbing/storer) interface.
+It can be used to manipulate git repositories at low level *(plumbing)* or high level *(porcelain)*, through an idiomatic Go API. It also supports several types of storage, such as in-memory filesystems, or custom implementations thanks to the [`Storer`](https://godoc.org/github.com/go-git/go-git/v5/plumbing/storer) interface.
 
 It's being actively developed since 2015 and is being used extensively by [source{d}](https://sourced.tech/) and [Keybase](https://keybase.io/blog/encrypted-git-for-everyone), and by many other libraries and tools.
 
@@ -21,7 +21,7 @@ Installation
 The recommended way to install *go-git* is:
 
 ```
-go get -u gopkg.in/src-d/go-git.v4/...
+go get -u github.com/go-git/go-git/v5/...
 ```
 
 > We use [gopkg.in](http://labix.org/gopkg.in) to version the API, this means that when `go get` clones the package, it's the latest tag matching `v4.*` that is cloned and not the master branch.

_examples/branch/main.go

@@ -3,9 +3,9 @@ package main
 import (
 	"os"
 
-	"gopkg.in/src-d/go-git.v4"
-	. "gopkg.in/src-d/go-git.v4/_examples"
-	"gopkg.in/src-d/go-git.v4/plumbing"
+	"github.com/go-git/go-git/v5"
+	. "github.com/go-git/go-git/v5/_examples"
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 // An example of how to create and remove branches or any other kind of reference.

_examples/checkout/main.go

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"os"
 
-	"gopkg.in/src-d/go-git.v4"
-	. "gopkg.in/src-d/go-git.v4/_examples"
-	"gopkg.in/src-d/go-git.v4/plumbing"
+	"github.com/go-git/go-git/v5"
+	. "github.com/go-git/go-git/v5/_examples"
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 // Basic example of how to checkout a specific commit.

_examples/clone/auth/basic/access_token/main.go

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"os"
 
-	git "gopkg.in/src-d/go-git.v4"
-	. "gopkg.in/src-d/go-git.v4/_examples"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
+	git "github.com/go-git/go-git/v5"
+	. "github.com/go-git/go-git/v5/_examples"
+	"github.com/go-git/go-git/v5/plumbing/transport/http"
 )
 
 func main() {

_examples/clone/auth/basic/username_password/main.go

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"os"
 
-	git "gopkg.in/src-d/go-git.v4"
-	. "gopkg.in/src-d/go-git.v4/_examples"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
+	git "github.com/go-git/go-git/v5"
+	. "github.com/go-git/go-git/v5/_examples"
+	"github.com/go-git/go-git/v5/plumbing/transport/http"
 )
 
 func main() {

_examples/clone/main.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"os"
 
-	"gopkg.in/src-d/go-git.v4"
-	. "gopkg.in/src-d/go-git.v4/_examples"
+	"github.com/go-git/go-git/v5"
+	. "github.com/go-git/go-git/v5/_examples"
 )
 
 // Basic example of how to clone a repository using clone options.

_examples/commit/main.go

@@ -7,9 +7,9 @@ import (
 	"path/filepath"
 	"time"
 
-	"gopkg.in/src-d/go-git.v4"
-	. "gopkg.in/src-d/go-git.v4/_examples"
-	"gopkg.in/src-d/go-git.v4/plumbing/object"
+	"github.com/go-git/go-git/v5"
+	. "github.com/go-git/go-git/v5/_examples"
+	"github.com/go-git/go-git/v5/plumbing/object"
 )
 
 // Basic example of how to commit changes to the current branch to an existing

_examples/common_test.go

@@ -75,7 +75,7 @@ func tempFolder() string {
 func packageFolder() string {
 	return filepath.Join(
 		build.Default.GOPATH,
-		"src", "gopkg.in/src-d/go-git.v4",
+		"src", "github.com/go-git/go-git/v5",
 	)
 }