Switch from Travis CI to GitHub Actions

While Travis CI has served us well in the past, the recent changes made it unusable. Farewell Travis CI!

.github/workflows/ci.yaml

@@ -0,0 +1,24 @@
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull
+# request events but only for the main branch
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches: [ master ]
+  schedule:
+    - cron:  '0 0 15 * *'
+
+
+jobs:
+  ci:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Build and TesT
+      run: npx --package mini-cross@0.15.2 mc --no-tty ubuntu:16.04 .mc/rebuild.sh
+

.mc/rebuild.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -e
+
+
+# @see https://stackoverflow.com/a/1482133
+DIRECTORY_OF_SCRIPT=`dirname "$(readlink -f "$0")"`
+
+SOURCE_DIRECTORY="${DIRECTORY_OF_SCRIPT}/.."
+BUILD_DIRECTORY="${DIRECTORY_OF_SCRIPT}/../build"
+
+
+if [ -d "${BUILD_DIRECTORY}" ]; then
+	rm -rf "${BUILD_DIRECTORY}"
+fi
+mkdir "${BUILD_DIRECTORY}"
+
+(cd "${BUILD_DIRECTORY}" && cmake -DCMAKE_BUILD_TYPE=Release ..)
+make --directory "${BUILD_DIRECTORY}" --silent
+make --directory "${BUILD_DIRECTORY}" --silent test
+

.travis.yml

@@ -1,14 +0,0 @@
-language: c
-compiler:
-  - gcc
-  - g++
-before_install:
-  - sudo apt-get update
-  - sudo apt-get install cmake valgrind
-script:
-  - mkdir build && cd build
-  - cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=gcc -DXML_PARSER_VERBOSE=On ..
-  - make
-after_script:
-  - make test
-

README.md

@@ -6,7 +6,7 @@ which also just parses an xml subset, [xml.c](https://github.com/ooxi/xml.c) is
 a simple, small and self contained xml parser in one file. Ideal for embedding
 into other projects without the need for big external dependencies.
 
-[![Build Status](https://secure.travis-ci.org/ooxi/xml.c.png)](http://travis-ci.org/ooxi/xml.c)
+[![Build Status](https://github.com/ooxi/xml.c/actions/workflows/ci.yaml/badge.svg)](https://github.com/ooxi/xml.c/actions)
 
 
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