replace Travis CI with GitHub Actions

Author: Changaco

.github/workflows/main.yml

@@ -0,0 +1,32 @@
+name: CI
+on:
+  # Trigger the workflow on push or pull request events but only for the master branch
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  # Allow running this workflow manually from the Actions tab
+  workflow_dispatch:
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install libarchive
+        run: sudo apt-get install -y libarchive13
+      - name: Install Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+      - name: Install Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
+      - name: Install Python 3.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.7'
+      - name: Install tox
+        run: pip install tox
+      - name: Run the tests
+        run: tox

.travis.yml

@@ -1,6 +1,3 @@
-.. image:: https://travis-ci.org/Changaco/python-libarchive-c.svg
-  :target: https://travis-ci.org/Changaco/python-libarchive-c
-
 A Python interface to libarchive. It uses the standard ctypes_ module to
 dynamically load and access the C library.