Remove duplicate tests agains bad type in test_AnalyzerResult
Remove string from AnalyzerResult value supported datatype
Tests: fix some compatibility issues with pytest-cov
Improve feedback messages on test_AnalyzerResults
Remove __init__.py from tests directory
Enable TimeSide to work without external libraries such as Yafe, Aubio, Vamp

Add automatic detection of Yaafe, Aubio and Vamp and add a conditional import of related analyzers in timeside/anaylers/__init__.py
Add a test section (pytest) for setuptools setup.py
Add a test section for Travis
Try again Gstreamer install for Travis
Test Virtualenv for Travis for fixing Gstreamer import Error
New tests command for Travis
Add h5py dependency in Travis
Add matplotlib dependency in Travis
Render AubioPitch grapher only if Aubio is available
Add gstreamer-plugins-bad dependency in Travis
Add gstreamer ppa repository in Travis
Check tests samples in setup.py test
Add -y option for add-apt-repository in Travis
Setuptools: try to fix samples data download for tests
Update .travis to include 'setup.py test'