docs(readme): update status badges (#107)

README.md

@@ -4,18 +4,15 @@
     <p align="center">
         Coverage analyzer for Lua
     </p>
-    <p>
-        <a href="https://travis-ci.org/lunarmodules/luacov">
-            <img src="https://travis-ci.org/lunarmodules/luacov.svg?branch=master" alt="Build Status">
-        </a>
-        <a href="https://ci.appveyor.com/project/hishamhm/luacov">
-            <img src="https://ci.appveyor.com/api/projects/status/nwlc6603cva412ub?svg=true" alt="Windows build status">
-        </a>
-    </p>
 </div>
 
 <br>
 
+## Status
+[![Unix build](https://img.shields.io/github/actions/workflow/status/lunarmodules/luacov/unix_build.yml?branch=master&label=Unix%20build&logo=linux)](https://github.com/lunarmodules/luacov/actions/workflows/unix_build.yml)
+[![Windows build](https://ci.appveyor.com/api/projects/status/nwlc6603cva412ub?svg=true)](https://ci.appveyor.com/project/hishamhm/luacov)
+[![Lint](https://github.com/lunarmodules/luacov/workflows/Lint/badge.svg)](https://github.com/lunarmodules/luacov/actions/workflows/lint.yml)
+[![SemVer](https://img.shields.io/github/v/tag/lunarmodules/luacov?color=brightgreen&label=SemVer&logo=semver&sort=semver)](CHANGELOG.md)
 
 ## Overview