Update readme

Author: tomas-novotny

README.md

@@ -2,9 +2,16 @@
 
 [![Latest Stable Version][ico-release]][link-release]
 [![Build Status][ico-workflow]][link-workflow]
+[![Coverage Status][ico-coverage]][link-coverage]
+[![Quality Score][ico-code-quality]][link-code-quality]
+[![Go Report Card][ico-go-report-card]][link-go-report-card]
 [![Go Dev Reference][ico-go-dev-reference]][link-go-dev-reference]
 [![Software License][ico-license]][link-licence]
 
+**Multi error**: Concurrent safe representation of a list of errors as a single error.
+
+**Data error**: Additional context for error using data fields and cause (previous) error.
+
 
 ## Installation
 
@@ -16,6 +23,46 @@ go get github.com/gravitton/errors
 ## Usage
 
 ```go
+package main
+
+import (
+	"github.com/gravitton/errors"
+	"sync"
+)
+
+func Process() error {
+	errs := errors.NewMulti()
+
+	if err := process1(); err != nil {
+		errs.Append(err)
+	}
+
+	if err := process2(); err != nil {
+		errs.Append(err)
+	}
+
+	return errs.ErrorOrNil()
+}
+
+func ProcessConcurrent() error {
+	errs := errors.NewMulti()
+	wg := sync.WaitGroup{}
+
+	for i := 0; i < 10; i++ {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+
+			if err := process(i); err != nil {
+				errs.Append(errors.Wrap(err).WithField("process", i))
+			}
+		}(i)
+	}
+
+	wg.Wait()
+
+	return errs.ErrorOrNil()
+}
 ```
 
 
@@ -34,6 +81,9 @@ The MIT License (MIT). Please see [License File][link-licence] for more informat
 [ico-workflow]:             https://img.shields.io/github/actions/workflow/status/gravitton/errors/main.yml?branch=main&style=flat-square
 [ico-release]:              https://img.shields.io/github/v/release/gravitton/errors?style=flat-square&colorB=blue
 [ico-go-dev-reference]:     https://img.shields.io/badge/go.dev-reference-blue?style=flat-square
+[ico-go-report-card]:       https://goreportcard.com/badge/github.com/gravitton/errors?style=flat-square
+[ico-coverage]:             https://img.shields.io/scrutinizer/coverage/g/gravitton/errors/main.svg?style=flat-square
+[ico-code-quality]:         https://img.shields.io/scrutinizer/g/gravitton/errors.svg?style=flat-square
 
 [link-author]:              https://github.com/gravitton
 [link-release]:             https://github.com/gravitton/errors/releases
@@ -42,3 +92,6 @@ The MIT License (MIT). Please see [License File][link-licence] for more informat
 [link-changelog]:           ./CHANGELOG.md
 [link-workflow]:            https://github.com/gravitton/errors/actions
 [link-go-dev-reference]:    https://pkg.go.dev/github.com/gravitton/errors
+[link-go-report-card]:      https://goreportcard.com/report/github.com/gravitton/errors
+[link-coverage]:            https://scrutinizer-ci.com/g/gravitton/errors/code-structure
+[link-code-quality]:        https://scrutinizer-ci.com/g/gravitton/errors

go.mod

@@ -2,4 +2,4 @@ module github.com/gravitton/errors
 
 go 1.24
 
-require github.com/gravitton/assert v0.1.0
+require github.com/gravitton/assert v0.2.0

go.sum

@@ -1,2 +1,2 @@
-github.com/gravitton/assert v0.1.0 h1:xHqkU70NLx/KOroQb6/PxeNefpBTghfxVvHTkwxxm10=
-github.com/gravitton/assert v0.1.0/go.mod h1:t/H52Szce7uofC0H1sN9yLZsj1TBvky5sGmrFiaxypY=
+github.com/gravitton/assert v0.2.0 h1:zJL3v5rHP/P1eJKljxFTb8zbW8WWr7Ih5wZBT/JMp80=
+github.com/gravitton/assert v0.2.0/go.mod h1:t/H52Szce7uofC0H1sN9yLZsj1TBvky5sGmrFiaxypY=