Replace (defunct) Travis with Github Actions (#141)

* Replace (defunct) Travis with Github Actions

* Drop testing 3.6 and 3.7 explicitly

Since 3.8 was already the default on Ubuntu 20.04. Also specify a specific version of pypy.

Todo: Also bump version number as this is technically breaking compatibility

.github/workflows/test.yaml

@@ -0,0 +1,31 @@
+name: Python package
+
+on: [push]
+
+jobs:
+  test:
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [
+          "3.8", "3.9", "3.10", "3.11",
+          "pypy3.9"
+        ]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: pip
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -r requirements.txt
+      - name: Test unit tests
+        run: |
+          python -m unittest discover -s sacremoses/test

setup.py

@@ -22,4 +22,5 @@
   ],
   install_requires = ['regex', 'click', 'joblib', 'tqdm'],
   entry_points=console_scripts,
+  python_requires='>=3.8',
 )