install portaudio19 before pyaudio

.github/workflows/ci.yml

@@ -21,6 +21,11 @@ jobs:
       with:
         python-version: '3.x'
 
+    - name: Install system dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y portaudio19-dev
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.gitignore

@@ -20,7 +20,6 @@ pip-log.txt
 pip-delete-this-directory.txt
 
 # Unit test / coverage reports
-htmlcov/
 .tox/
 .nox/
 .coverage