Merge branch 'develop' into main

README.md

@@ -1,6 +1,6 @@
 # Veil
 
-[![tests](https://github.com/adrianmejias/veil/actions/workflows/tests.yml/badge.svg)](https://github.com/adrianmejias/veil/actions/workflows/tests.yml) [![StyleCI](https://github.styleci.io/repos/394644917/shield?branch=main)](https://github.styleci.io/repos/394644917?branch=main) [![Build Status](https://travis-ci.com/adrianmejias/veil.svg?branch=main)](https://travis-ci.com/adrianmejias/veil) ![Downloads](https://img.shields.io/packagist/dt/adrianmejias/veil) ![Packagist](https://img.shields.io/packagist/v/adrianmejias/veil) ![License](https://img.shields.io/packagist/l/adrianmejias/veil) ![Liberapay](https://img.shields.io/liberapay/patrons/adrianmejias.svg?logo=liberapay)
+[![tests](https://github.com/adrianmejias/veil/actions/workflows/tests.yml/badge.svg)](https://github.com/adrianmejias/veil/actions/workflows/tests.yml) [![StyleCI](https://github.styleci.io/repos/394644917/shield?branch=main)](https://github.styleci.io/repos/394644917?branch=main) [![Build Status](https://travis-ci.com/adrianmejias/veil.svg?branch=main)](https://travis-ci.com/adrianmejias/veil) [![codecov](https://codecov.io/gh/adrianmejias/veil/branch/main/graph/badge.svg?token=P087FQPJ65)](https://codecov.io/gh/adrianmejias/veil) ![Downloads](https://img.shields.io/packagist/dt/adrianmejias/veil) ![Packagist](https://img.shields.io/packagist/v/adrianmejias/veil) ![License](https://img.shields.io/packagist/l/adrianmejias/veil) ![Liberapay](https://img.shields.io/liberapay/patrons/adrianmejias.svg?logo=liberapay)
 
 Autoloader for custom class instances.
 
@@ -40,6 +40,7 @@ Hello, world!
 - [x] Add unit tests
 - [x] Add documentation for open source contributations
 - [x] Add GitHub Action for unit tests
+- [ ] Add more unit test coverages
 - [ ] Add more documentation to README.md
 - [ ] Add API listing to README.md