Upgrade to python3

.github/workflows/ci.yml

@@ -0,0 +1,23 @@
+name: Run Tests
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Install dependencies & test
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y gzip tar zstd python3 python3-pip python3-venv
+        python3 -m venv venv
+        source venv/bin/activate
+        python3 -m pip install -r requirements.txt
+
+        chmod +x test.sh
+        ./test.sh

.gitignore

@@ -1 +1,6 @@
 *~
+.coverage*
+.idea
+test_data/
+coverage.xml
+venv/