Migrate from Travis to Github for CI

.github/workflows/run-tests.yml

@@ -0,0 +1,44 @@
+name: tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+
+jobs:
+  build:
+
+    name: Run tests
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "pypy-3.9"]
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install flake8 mypy pytest
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
+    - name: Run tests with pytest
+      run: |
+        python -m pytest -v
+
+    - name: Lint with flake8
+      run: |
+        python -m flake8 . --count --statistics
+    
+    - name: Run mypy
+      run: |
+        python -m mypy --strict simple_pid

README.md

@@ -1,6 +1,6 @@
 # simple-pid
 
-[![Travis](https://travis-ci.com/m-lundberg/simple-pid.svg?branch=master)](https://travis-ci.com/m-lundberg/simple-pid)
+[![Tests](https://github.com/m-lundberg/simple-pid/actions/workflows/run-tests.yml/badge.svg)](https://github.com/m-lundberg/simple-pid/actions?query=workflow%3Atests)
 [![PyPI](https://img.shields.io/pypi/v/simple-pid.svg)](https://pypi.org/project/simple-pid/)
 [![Read the Docs](https://img.shields.io/readthedocs/simple-pid.svg)](https://simple-pid.readthedocs.io/)
 [![License](https://img.shields.io/github/license/m-lundberg/simple-pid.svg)](https://github.com/m-lundberg/simple-pid/blob/master/LICENSE.md)