diff --git a/cmd/git-sv/config.go b/cmd/git-sv/config.go
index dfb00dc..9e34d6b 100644
--- a/cmd/git-sv/config.go
+++ b/cmd/git-sv/config.go
@@ -10,13 +10,12 @@ import (
 	"strings"
 
 	"github.com/bvieira/sv4git/sv"
-
 	"github.com/imdario/mergo"
 	"github.com/kelseyhightower/envconfig"
 	"gopkg.in/yaml.v3"
 )
 
-// EnvConfig env vars for cli configuration
+// EnvConfig env vars for cli configuration.
 type EnvConfig struct {
 	Home string `envconfig:"SV4GIT_HOME" default:""`
 }
@@ -30,7 +29,7 @@ func loadEnvConfig() EnvConfig {
 	return c
 }
 
-// Config cli yaml config
+// Config cli yaml config.
 type Config struct {
 	Version       string                 `yaml:"version"`
 	Versioning    sv.VersioningConfig    `yaml:"versioning"`
diff --git a/cmd/git-sv/handlers.go b/cmd/git-sv/handlers.go
index 64a8564..cd8c79b 100644
--- a/cmd/git-sv/handlers.go
+++ b/cmd/git-sv/handlers.go
@@ -10,9 +10,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/bvieira/sv4git/sv"
-
 	"github.com/Masterminds/semver/v3"
+	"github.com/bvieira/sv4git/sv"
 	"github.com/urfave/cli/v2"
 	"gopkg.in/yaml.v3"
 )
diff --git a/cmd/git-sv/main.go b/cmd/git-sv/main.go
index 12c5525..670ff92 100644
--- a/cmd/git-sv/main.go
+++ b/cmd/git-sv/main.go
@@ -6,11 +6,10 @@ import (
 	"path/filepath"
 
 	"github.com/bvieira/sv4git/sv"
-
 	"github.com/urfave/cli/v2"
 )
 
-// Version for git-sv
+// Version for git-sv.
 var Version = ""
 
 const (
diff --git a/sv/formatter.go b/sv/formatter.go
index abb9316..6509e8b 100644
--- a/sv/formatter.go
+++ b/sv/formatter.go
@@ -78,7 +78,7 @@ func (p OutputFormatterImpl) FormatReleaseNote(releasenote ReleaseNote) string {
 	return b.String()
 }
 
-// FormatChangelog format a changelog
+// FormatChangelog format a changelog.
 func (p OutputFormatterImpl) FormatChangelog(releasenotes []ReleaseNote) string {
 	var templateVars []releaseNoteTemplateVariables
 	for _, v := range releasenotes {
@@ -91,12 +91,12 @@ func (p OutputFormatterImpl) FormatChangelog(releasenotes []ReleaseNote) string
 }
 
 func releaseNoteVariables(releasenote ReleaseNote) releaseNoteTemplateVariables {
-	var date = ""
+	date := ""
 	if !releasenote.Date.IsZero() {
 		date = releasenote.Date.Format("2006-01-02")
 	}
 
-	var version = ""
+	version := ""
 	if releasenote.Version != nil {
 		version = releasenote.Version.String()
 	}
diff --git a/sv/formatter_test.go b/sv/formatter_test.go
index 263e6d7..d460605 100644
--- a/sv/formatter_test.go
+++ b/sv/formatter_test.go
@@ -9,10 +9,13 @@ import (
 
 var dateChangelog = `## v1.0.0 (2020-05-01)
 `
+
 var emptyDateChangelog = `## v1.0.0
 `
+
 var emptyVersionChangelog = `## 2020-05-01
 `
+
 var fullChangeLog = `## v1.0.0 (2020-05-01)
 
 ### Features
diff --git a/sv/git.go b/sv/git.go
index dde3242..7d873c9 100644
--- a/sv/git.go
+++ b/sv/git.go
@@ -18,7 +18,7 @@ const (
 	endLine      = "~~"
 )
 
-// Git commands
+// Git commands.
 type Git interface {
 	LastTag() string
 	Log(lr LogRange) ([]GitCommitLog, error)
@@ -29,48 +29,48 @@ type Git interface {
 	IsDetached() (bool, error)
 }
 
-// GitCommitLog description of a single commit log
+// GitCommitLog description of a single commit log.
 type GitCommitLog struct {
 	Date    string        `json:"date,omitempty"`
 	Hash    string        `json:"hash,omitempty"`
 	Message CommitMessage `json:"message,omitempty"`
 }
 
-// GitTag git tag info
+// GitTag git tag info.
 type GitTag struct {
 	Name string
 	Date time.Time
 }
 
-// LogRangeType type of log range
+// LogRangeType type of log range.
 type LogRangeType string
 
-// constants for log range type
+// constants for log range type.
 const (
 	TagRange  LogRangeType = "tag"
 	DateRange              = "date"
 	HashRange              = "hash"
 )
 
-// LogRange git log range
+// LogRange git log range.
 type LogRange struct {
 	rangeType LogRangeType
 	start     string
 	end       string
 }
 
-// NewLogRange LogRange constructor
+// NewLogRange LogRange constructor.
 func NewLogRange(t LogRangeType, start, end string) LogRange {
 	return LogRange{rangeType: t, start: start, end: end}
 }
 
-// GitImpl git command implementation
+// GitImpl git command implementation.
 type GitImpl struct {
 	messageProcessor MessageProcessor
 	tagCfg           TagConfig
 }
 
-// NewGit constructor
+// NewGit constructor.
 func NewGit(messageProcessor MessageProcessor, cfg TagConfig) *GitImpl {
 	return &GitImpl{
 		messageProcessor: messageProcessor,
@@ -78,7 +78,7 @@ func NewGit(messageProcessor MessageProcessor, cfg TagConfig) *GitImpl {
 	}
 }
 
-// LastTag get last tag, if no tag found, return empty
+// LastTag get last tag, if no tag found, return empty.
 func (GitImpl) LastTag() string {
 	cmd := exec.Command("git", "for-each-ref", "refs/tags", "--sort", "-creatordate", "--format", "%(refname:short)", "--count", "1")
 	out, err := cmd.CombinedOutput()
@@ -88,7 +88,7 @@ func (GitImpl) LastTag() string {
 	return strings.TrimSpace(strings.Trim(string(out), "\n"))
 }
 
-// Log return git log
+// Log return git log.
 func (g GitImpl) Log(lr LogRange) ([]GitCommitLog, error) {
 	format := "--pretty=format:\"%ad" + logSeparator + "%h" + logSeparator + "%s" + logSeparator + "%b" + endLine + "\""
 	params := []string{"log", "--date=short", format}
@@ -114,7 +114,7 @@ func (g GitImpl) Log(lr LogRange) ([]GitCommitLog, error) {
 	return parseLogOutput(g.messageProcessor, string(out)), nil
 }
 
-// Commit runs git commit
+// Commit runs git commit.
 func (g GitImpl) Commit(header, body, footer string) error {
 	cmd := exec.Command("git", "commit", "-m", header, "-m", "", "-m", body, "-m", "", "-m", footer)
 	cmd.Stdout = os.Stdout
@@ -122,7 +122,7 @@ func (g GitImpl) Commit(header, body, footer string) error {
 	return cmd.Run()
 }
 
-// Tag create a git tag
+// Tag create a git tag.
 func (g GitImpl) Tag(version semver.Version) error {
 	tag := fmt.Sprintf(g.tagCfg.Pattern, version.Major(), version.Minor(), version.Patch())
 	tagMsg := fmt.Sprintf("Version %d.%d.%d", version.Major(), version.Minor(), version.Patch())
@@ -136,7 +136,7 @@ func (g GitImpl) Tag(version semver.Version) error {
 	return pushCommand.Run()
 }
 
-// Tags list repository tags
+// Tags list repository tags.
 func (g GitImpl) Tags() ([]GitTag, error) {
 	cmd := exec.Command("git", "for-each-ref", "--sort", "creatordate", "--format", "%(creatordate:iso8601)#%(refname:short)", "refs/tags")
 	out, err := cmd.CombinedOutput()
@@ -146,7 +146,7 @@ func (g GitImpl) Tags() ([]GitTag, error) {
 	return parseTagsOutput(string(out))
 }
 
-// Branch get git branch
+// Branch get git branch.
 func (GitImpl) Branch() string {
 	cmd := exec.Command("git", "symbolic-ref", "--short", "HEAD")
 	out, err := cmd.CombinedOutput()
diff --git a/sv/message.go b/sv/message.go
index cc5e354..fd08ef1 100644
--- a/sv/message.go
+++ b/sv/message.go
@@ -23,7 +23,7 @@ type CommitMessage struct {
 	Metadata         map[string]string `json:"metadata,omitempty"`
 }
 
-// NewCommitMessage commit message constructor
+// NewCommitMessage commit message constructor.
 func NewCommitMessage(ctype, scope, description, body, issue, breakingChanges string) CommitMessage {
 	metadata := make(map[string]string)
 	if issue != "" {
@@ -58,7 +58,7 @@ type MessageProcessor interface {
 	Parse(subject, body string) CommitMessage
 }
 
-// NewMessageProcessor MessageProcessorImpl constructor
+// NewMessageProcessor MessageProcessorImpl constructor.
 func NewMessageProcessor(mcfg CommitMessageConfig, bcfg BranchesConfig) *MessageProcessorImpl {
 	return &MessageProcessorImpl{
 		messageCfg:  mcfg,
@@ -125,7 +125,7 @@ func (p MessageProcessorImpl) ValidateDescription(description string) error {
 // Enhance add metadata on commit message.
 func (p MessageProcessorImpl) Enhance(branch string, message string) (string, error) {
 	if p.branchesCfg.DisableIssue || p.messageCfg.IssueFooterConfig().Key == "" || hasIssueID(message, p.messageCfg.IssueFooterConfig()) {
-		return "", nil //enhance disabled
+		return "", nil // enhance disabled
 	}
 
 	issue, err := p.IssueID(branch)
diff --git a/sv/message_test.go b/sv/message_test.go
index 4d3c43f..1992d1b 100644
--- a/sv/message_test.go
+++ b/sv/message_test.go
@@ -62,7 +62,7 @@ func newBranchCfg(skipDetached bool) BranchesConfig {
 	}
 }
 
-// messages samples start
+// messages samples start.
 var fullMessage = `fix: correct minor typos in code
 
 see the issue for details
@@ -71,6 +71,7 @@ on typos fixed.
 
 Reviewed-by: Z
 Refs #133`
+
 var fullMessageWithJira = `fix: correct minor typos in code
 
 see the issue for details
@@ -80,6 +81,7 @@ on typos fixed.
 Reviewed-by: Z
 Refs #133
 jira: JIRA-456`
+
 var fullMessageRefs = `fix: correct minor typos in code
 
 see the issue for details
@@ -87,11 +89,13 @@ see the issue for details
 on typos fixed.
 
 Refs #133`
+
 var subjectAndBodyMessage = `fix: correct minor typos in code
 
 see the issue for details
 
 on typos fixed.`
+
 var subjectAndFooterMessage = `refactor!: drop support for Node 6
 
 BREAKING CHANGE: refactor to use JavaScript features not available in Node 6.`
@@ -470,7 +474,7 @@ func Test_splitCommitMessageContent(t *testing.T) {
 	}
 }
 
-//commitType, scope, description, hasBreakingChange
+//commitType, scope, description, hasBreakingChange.
 func Test_parseSubjectMessage(t *testing.T) {
 	tests := []struct {
 		name                  string
diff --git a/sv/releasenotes.go b/sv/releasenotes.go
index e02c291..7fafeb7 100644
--- a/sv/releasenotes.go
+++ b/sv/releasenotes.go
@@ -55,7 +55,7 @@ type ReleaseNote struct {
 	BreakingChanges BreakingChangeSection
 }
 
-// BreakingChangeSection breaking change section
+// BreakingChangeSection breaking change section.
 type BreakingChangeSection struct {
 	Name     string
 	Messages []string
diff --git a/sv/semver.go b/sv/semver.go
index 06d76d1..b648da6 100644
--- a/sv/semver.go
+++ b/sv/semver.go
@@ -11,7 +11,7 @@ const (
 	major
 )
 
-// ToVersion parse string to semver.Version
+// ToVersion parse string to semver.Version.
 func ToVersion(value string) (semver.Version, error) {
 	version := value
 	if version == "" {
@@ -24,12 +24,12 @@ func ToVersion(value string) (semver.Version, error) {
 	return *v, nil
 }
 
-// SemVerCommitsProcessor interface
+// SemVerCommitsProcessor interface.
 type SemVerCommitsProcessor interface {
 	NextVersion(version semver.Version, commits []GitCommitLog) (semver.Version, bool)
 }
 
-// SemVerCommitsProcessorImpl process versions using commit log
+// SemVerCommitsProcessorImpl process versions using commit log.
 type SemVerCommitsProcessorImpl struct {
 	MajorVersionTypes         map[string]struct{}
 	MinorVersionTypes         map[string]struct{}
@@ -38,7 +38,7 @@ type SemVerCommitsProcessorImpl struct {
 	IncludeUnknownTypeAsPatch bool
 }
 
-// NewSemVerCommitsProcessor SemanticVersionCommitsProcessorImpl constructor
+// NewSemVerCommitsProcessor SemanticVersionCommitsProcessorImpl constructor.
 func NewSemVerCommitsProcessor(vcfg VersioningConfig, mcfg CommitMessageConfig) *SemVerCommitsProcessorImpl {
 	return &SemVerCommitsProcessorImpl{
 		IncludeUnknownTypeAsPatch: !vcfg.IgnoreUnknown,
@@ -49,9 +49,9 @@ func NewSemVerCommitsProcessor(vcfg VersioningConfig, mcfg CommitMessageConfig)
 	}
 }
 
-// NextVersion calculates next version based on commit log
+// NextVersion calculates next version based on commit log.
 func (p SemVerCommitsProcessorImpl) NextVersion(version semver.Version, commits []GitCommitLog) (semver.Version, bool) {
-	var versionToUpdate = none
+	versionToUpdate := none
 	for _, commit := range commits {
 		if v := p.versionTypeToUpdate(commit); v > versionToUpdate {
 			versionToUpdate = v