Add PHP 8.1 support

Author: hxtree

.github/workflows/ci.yml

@@ -85,6 +85,7 @@ jobs:
           - '7.3'
           - '7.4'
           - '8.0'
+          - '8.1'
 
     steps:
       - name: "Checkout code"

.github/workflows/heartbeat.yml

@@ -2,17 +2,17 @@ name: Packagist heartbeat
 
 on:
   schedule:
-    - cron:  '1/16 3-9 * * *'
+    - cron:  '1/16 4-10 * * *'
   workflow_dispatch:
 
 jobs:
-   package-test:
+  package-test2:
     name: "Composer package install test"
     runs-on: "ubuntu-latest"
     strategy:
       matrix:
         php-version:
-          - '8.0'
+          - '8.1'
     steps:
       - name: Install dependencies
-        run: composer require ouxsoft/phpmarkup
+        run: echo "{}" >> composer.json && composer require ouxsoft/phpmarkup

CHANGELOG.md

@@ -11,6 +11,10 @@ All releases must adhere to [SemVer 2](https://semver.org/) naming convention an
 ## PHPMarkup [Unreleased]
 Released: TBA. Notable changes:
 
+## PHPMarkup 4.3.0
+Released: 2022-01-01. Notable changes:
+* Changed: Add PHP 8.1 support.
+
 ## PHPMarkup 4.2.6
 Released: 2021-10-08. Notable changes:
 * Changed: Marker attribute removal to end routine.

README.md

@@ -6,7 +6,7 @@
 [![Docs Status](https://readthedocs.org/projects/phpmarkup/badge/?version=latest&style=flat)](https://readthedocs.org/projects/phpmarkup)
 
 [![Latest Stable Version](https://img.shields.io/packagist/v/Ouxsoft/phpmarkup.svg)](https://packagist.org/packages/Ouxsoft/phpmarkup)
-[![PHP Versions Supported](https://img.shields.io/badge/php-7.3%20to%208.0-777bb3.svg?logo=php&logoColor=white&labelColor=555555)](https://api.travis-ci.com/Ouxsoft/phpmarkup.svg?branch=master&status=passed)
+[![PHP Versions Supported](https://img.shields.io/badge/php-7.3%20to%208.1-777bb3.svg?logo=php&logoColor=white&labelColor=555555)](https://api.travis-ci.com/Ouxsoft/phpmarkup.svg?branch=master&status=passed)
 [![License](https://img.shields.io/badge/license-MIT-428f7e.svg?logo=open%20source%20initiative&logoColor=white&labelColor=555555)](https://github.com/Ouxsoft/phpmarkup/blob/master/LICENSE)
 [![Total Downloads](https://img.shields.io/packagist/dt/Ouxsoft/phpmarkup.svg)](https://packagist.org/packages/Ouxsoft/phpmarkup)
 

composer.json

@@ -17,7 +17,7 @@
     "issues": "https://github.com/Ouxsoft/phpmarkup/issues"
   },
   "require": {
-    "php": "^7.3 || ~8.0.0",
+    "php": "^7.3 || ^8.0",
     "ext-dom": "*",
     "ext-json": "*",
     "ext-libxml": "*",