diff --git a/models/attachment.go b/models/attachment.go
index 3b3521bf60364..f30025687fcc4 100644
--- a/models/attachment.go
+++ b/models/attachment.go
@@ -12,9 +12,11 @@ import (
 	"path"
 	"time"
 
+	api "code.gitea.io/sdk/gitea"
 	"github.com/go-xorm/xorm"
 	gouuid "github.com/satori/go.uuid"
 
+	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 )
 
@@ -58,6 +60,15 @@ func (a *Attachment) IncreaseDownloadCount() error {
 	return nil
 }
 
+// GetSize gets the size of the attachment in bytes
+func (a *Attachment) GetSize() (int64, error) {
+	info, err := os.Stat(a.LocalPath())
+	if err != nil {
+		return 0, err
+	}
+	return info.Size(), nil
+}
+
 // AttachmentLocalPath returns where attachment is stored in local file
 // system based on given UUID.
 func AttachmentLocalPath(uuid string) string {
@@ -69,6 +80,24 @@ func (a *Attachment) LocalPath() string {
 	return AttachmentLocalPath(a.UUID)
 }
 
+// APIFormat converts a Attachment to an api.Attachment
+func (a *Attachment) APIFormat() *api.Attachment {
+	apiAttachment := &api.Attachment{
+		ID:            a.ID,
+		Created:       a.Created,
+		Name:          a.Name,
+		UUID:          a.UUID,
+		DownloadURL:   setting.AppURL + "attachments/" + a.UUID,
+		DownloadCount: a.DownloadCount,
+	}
+	fileSize, err := a.GetSize()
+	log.Warn("Error getting the file size for attachment %s. ", a.UUID, err)
+	if err == nil {
+		apiAttachment.Size = fileSize
+	}
+	return apiAttachment
+}
+
 // NewAttachment creates a new attachment object.
 func NewAttachment(name string, buf []byte, file multipart.File) (_ *Attachment, err error) {
 	attach := &Attachment{
@@ -126,6 +155,18 @@ func GetAttachmentByUUID(uuid string) (*Attachment, error) {
 	return getAttachmentByUUID(x, uuid)
 }
 
+// GetAttachmentByID returns attachment by given ID.
+func GetAttachmentByID(id int64) (*Attachment, error) {
+	attach := &Attachment{ID: id}
+	has, err := x.Get(attach)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrAttachmentNotExist{id, ""}
+	}
+	return attach, nil
+}
+
 func getAttachmentsByIssueID(e Engine, issueID int64) ([]*Attachment, error) {
 	attachments := make([]*Attachment, 0, 10)
 	return attachments, e.Where("issue_id = ? AND comment_id = 0", issueID).Find(&attachments)
@@ -142,6 +183,12 @@ func GetAttachmentsByCommentID(commentID int64) ([]*Attachment, error) {
 	return attachments, x.Where("comment_id=?", commentID).Find(&attachments)
 }
 
+// GetAttachmentsByReleaseID returns all attachments of a release
+func GetAttachmentsByReleaseID(releaseID int64) ([]*Attachment, error) {
+	attachments := make([]*Attachment, 0, 10)
+	return attachments, x.Where("release_id=?", releaseID).Find(&attachments)
+}
+
 // DeleteAttachment deletes the given attachment and optionally the associated file.
 func DeleteAttachment(a *Attachment, remove bool) error {
 	_, err := DeleteAttachments([]*Attachment{a}, remove)
diff --git a/models/pull.go b/models/pull.go
index 94bd7930ff684..1db0a89741432 100644
--- a/models/pull.go
+++ b/models/pull.go
@@ -495,7 +495,7 @@ func (pr *PullRequest) getMergeCommit() (*git.Commit, error) {
 
 	if err != nil {
 		// Errors are signaled by a non-zero status that is not 1
-		if err.Error() == "exit status 1" {
+		if strings.Contains(err.Error(), "exit status 1") {
 			return nil, nil
 		}
 		return nil, fmt.Errorf("git merge-base --is-ancestor: %v %v", stderr, err)
diff --git a/models/release.go b/models/release.go
index f12fc06840583..6d7352ad3c16c 100644
--- a/models/release.go
+++ b/models/release.go
@@ -71,6 +71,14 @@ func (r *Release) loadAttributes(e Engine) error {
 			return err
 		}
 	}
+	// load the attachments of this release
+	if r.Attachments == nil {
+		attachments, err := GetAttachmentsByReleaseID(r.ID)
+		if err != nil {
+			return err
+		}
+		r.Attachments = attachments
+	}
 	return nil
 }
 
@@ -97,6 +105,10 @@ func (r *Release) TarURL() string {
 
 // APIFormat convert a Release to api.Release
 func (r *Release) APIFormat() *api.Release {
+	apiAttachments := make([]*api.Attachment, len(r.Attachments))
+	for i := range r.Attachments {
+		apiAttachments[i] = r.Attachments[i].APIFormat()
+	}
 	return &api.Release{
 		ID:           r.ID,
 		TagName:      r.TagName,
@@ -110,6 +122,7 @@ func (r *Release) APIFormat() *api.Release {
 		CreatedAt:    r.Created,
 		PublishedAt:  r.Created,
 		Publisher:    r.Publisher.APIFormat(),
+		Attachments:  apiAttachments,
 	}
 }
 
@@ -235,8 +248,9 @@ func GetReleaseByID(id int64) (*Release, error) {
 
 // FindReleasesOptions describes the conditions to Find releases
 type FindReleasesOptions struct {
-	IncludeDrafts bool
-	TagNames      []string
+	IncludeDrafts      bool
+	IncludePrereleases bool
+	TagNames           []string
 }
 
 func (opts *FindReleasesOptions) toConds(repoID int64) builder.Cond {
@@ -246,13 +260,16 @@ func (opts *FindReleasesOptions) toConds(repoID int64) builder.Cond {
 	if !opts.IncludeDrafts {
 		cond = cond.And(builder.Eq{"is_draft": false})
 	}
+	if !opts.IncludePrereleases {
+		cond = cond.And(builder.Eq{"is_prerelease": false})
+	}
 	if len(opts.TagNames) > 0 {
 		cond = cond.And(builder.In("tag_name", opts.TagNames))
 	}
 	return cond
 }
 
-// GetReleasesByRepoID returns a list of releases of repository.
+// GetReleasesByRepoID returns a list of releases of repository. The results are sorted by created date and id descending
 func GetReleasesByRepoID(repoID int64, opts FindReleasesOptions, page, pageSize int) (rels []*Release, err error) {
 	if page <= 0 {
 		page = 1
diff --git a/models/user.go b/models/user.go
index 6484c8cf696f8..2a4fb557db76c 100644
--- a/models/user.go
+++ b/models/user.go
@@ -333,15 +333,14 @@ func (u *User) generateRandomAvatar(e Engine) error {
 // which includes app sub-url as prefix. However, it is possible
 // to return full URL if user enables Gravatar-like service.
 func (u *User) RelAvatarLink() string {
-	defaultImgURL := setting.AppSubURL + "/img/avatar_default.png"
 	if u.ID == -1 {
-		return defaultImgURL
+		return base.DefaultAvatarLink()
 	}
 
 	switch {
 	case u.UseCustomAvatar:
 		if !com.IsFile(u.CustomAvatarPath()) {
-			return defaultImgURL
+			return base.DefaultAvatarLink()
 		}
 		return setting.AppSubURL + "/avatars/" + u.Avatar
 	case setting.DisableGravatar, setting.OfflineMode:
diff --git a/modules/base/tool.go b/modules/base/tool.go
index 8952e7a8c959a..543775e0dfdc7 100644
--- a/modules/base/tool.go
+++ b/modules/base/tool.go
@@ -192,13 +192,21 @@ func HashEmail(email string) string {
 	return EncodeMD5(strings.ToLower(strings.TrimSpace(email)))
 }
 
+// DefaultAvatarLink the default avatar link
+func DefaultAvatarLink() string {
+	return setting.AppSubURL + "/img/avatar_default.png"
+}
+
 // AvatarLink returns relative avatar link to the site domain by given email,
 // which includes app sub-url as prefix. However, it is possible
 // to return full URL if user enables Gravatar-like service.
 func AvatarLink(email string) string {
 	if setting.EnableFederatedAvatar && setting.LibravatarService != nil {
-		// TODO: This doesn't check any error. AvatarLink should return (string, error)
-		url, _ := setting.LibravatarService.FromEmail(email)
+		url, err := setting.LibravatarService.FromEmail(email)
+		if err != nil {
+			log.Error(4, "LibravatarService.FromEmail(email=%s): error %v", email, err)
+			return DefaultAvatarLink()
+		}
 		return url
 	}
 
@@ -206,7 +214,7 @@ func AvatarLink(email string) string {
 		return setting.GravatarSource + HashEmail(email)
 	}
 
-	return setting.AppSubURL + "/img/avatar_default.png"
+	return DefaultAvatarLink()
 }
 
 // Seconds-based time units
diff --git a/routers/api/v1/api.go b/routers/api/v1/api.go
index 0e356b1f907ac..c6fd8e31e9ee0 100644
--- a/routers/api/v1/api.go
+++ b/routers/api/v1/api.go
@@ -420,9 +420,16 @@ func RegisterRoutes(m *macaron.Macaron) {
 				m.Group("/releases", func() {
 					m.Combo("").Get(repo.ListReleases).
 						Post(bind(api.CreateReleaseOption{}), repo.CreateRelease)
-					m.Combo("/:id").Get(repo.GetRelease).
-						Patch(bind(api.EditReleaseOption{}), repo.EditRelease).
-						Delete(repo.DeleteRelease)
+					m.Combo("/latest").Get(repo.GetLatestRelease)
+					m.Group("/:id", func() {
+						m.Combo("").Get(repo.GetRelease).
+							Patch(bind(api.EditReleaseOption{}), repo.EditRelease).
+							Delete(repo.DeleteRelease)
+						m.Group("/assets", func() {
+							m.Combo("").Get(repo.ListReleaseAttachments)
+							m.Combo("/:assetId").Get(repo.GetReleaseAttachment)
+						})
+					})
 				})
 				m.Post("/mirror-sync", repo.MirrorSync)
 				m.Get("/editorconfig/:filename", context.RepoRef(), repo.GetEditorconfig)
diff --git a/routers/api/v1/repo/release.go b/routers/api/v1/repo/release.go
index ed5b8f4f788ba..a1aa928291def 100644
--- a/routers/api/v1/repo/release.go
+++ b/routers/api/v1/repo/release.go
@@ -32,6 +32,56 @@ func GetRelease(ctx *context.APIContext) {
 	ctx.JSON(200, release.APIFormat())
 }
 
+// ListReleaseAttachments get all the attachments of a release
+func ListReleaseAttachments(ctx *context.APIContext) {
+	id := ctx.ParamsInt64(":id")
+	release, err := models.GetReleaseByID(id)
+	if err != nil {
+		ctx.Error(500, "GetReleaseByID", err)
+		return
+	}
+	if release.RepoID != ctx.Repo.Repository.ID {
+		ctx.Status(404)
+		return
+	}
+	// load the attachments of this release
+	attachments, err := models.GetAttachmentsByReleaseID(id)
+	if err != nil {
+		ctx.Error(500, "GetAttachmentsByReleaseID", err)
+		return
+	}
+	// build the attachment list
+	apiAttachments := make([]*api.Attachment, len(attachments))
+	for i := range attachments {
+		apiAttachments[i] = attachments[i].APIFormat()
+	}
+	ctx.JSON(200, apiAttachments)
+}
+
+// GetReleaseAttachment get a single attachment of a release
+func GetReleaseAttachment(ctx *context.APIContext) {
+	id := ctx.ParamsInt64(":id")
+	attachmentID := ctx.ParamsInt64(":assetId")
+	release, err := models.GetReleaseByID(id)
+	if err != nil {
+		ctx.Error(500, "GetReleaseByID", err)
+		return
+	}
+	if release.RepoID != ctx.Repo.Repository.ID {
+		ctx.Status(404)
+		return
+	}
+	// load the attachments of this release
+	attachment, err := models.GetAttachmentByID(attachmentID)
+	// if the attachment was not found, or it was found but is not associated with this release, then throw 404
+	if err != nil || id != attachment.ReleaseID {
+		ctx.Status(404)
+		return
+	}
+
+	ctx.JSON(200, attachment.APIFormat())
+}
+
 // ListReleases list a repository's releases
 func ListReleases(ctx *context.APIContext) {
 	access, err := models.AccessLevel(ctx.User.ID, ctx.Repo.Repository)
@@ -58,6 +108,29 @@ func ListReleases(ctx *context.APIContext) {
 	ctx.JSON(200, rels)
 }
 
+// GetLatestRelease Gets the latest release in a repository. Draft releases and prereleases are not returned
+func GetLatestRelease(ctx *context.APIContext) {
+	// we set the pageSize to 1 to get back only one release
+	releases, err := models.GetReleasesByRepoID(ctx.Repo.Repository.ID, models.FindReleasesOptions{
+		IncludeDrafts:      false,
+		IncludePrereleases: false,
+	}, 1, 1)
+	if err != nil {
+		ctx.Error(500, "GetReleasesByRepoID", err)
+		return
+	}
+	if len(releases) <= 0 {
+		// no releases found, just return 404
+		ctx.Status(404)
+		return
+	}
+	if err := releases[0].LoadAttributes(); err != nil {
+		ctx.Error(500, "LoadAttributes", err)
+		return
+	}
+	ctx.JSON(200, releases[0].APIFormat())
+}
+
 // CreateRelease create a release
 func CreateRelease(ctx *context.APIContext, form api.CreateReleaseOption) {
 	if ctx.Repo.AccessMode < models.AccessModeWrite {