Work around error in tinytag wheel

Author: tobinus

.travis.yml

@@ -13,7 +13,8 @@ python:
 
 install:
   # lxml dropped support for Python 3.3 in version 4.3.0
-  - if [[ $TRAVIS_PYTHON_VERSION == 3.3 ]]; then pip install 'lxml<4.3.0'; fi
+  # Must work around bug in tinytag https://github.com/devsnd/tinytag/issues/71
+  - if [[ $TRAVIS_PYTHON_VERSION == 3.3 ]]; then pip install --no-binary tinytag 'lxml<4.3.0' tinytag; fi
   # lxml dropped support for Python 3.4 in version 4.4.0
   - if [[ $TRAVIS_PYTHON_VERSION == 3.4 ]]; then pip install 'lxml<4.4.0'; fi
   - pip install -r requirements.txt