Add a space to setup.py for prettiness

Merge pull request #65 from beasteers/master

Update Readme to reflect Tensorflow 2 instructions in installation.rst (and fix version typo in docs)

Update version.py

Update version.py

Merge pull request #63 from marl/salamon/soundfile

pysoundfile --> soundfile

Fix short version, set long version to 0.4.0rc0

Finalize v0.3.1

Set up v0.3.1 release candidate 0

Add libsndfile conda note to docs and fix some double grave quotes

Add conda install instructions for libsndfile