Ensure that "colour.utilities.describe_environment" does not raise an exception with Python 3 when trying invoking "git describe".
@@ -417,6 +417,7 @@ def describe_environment(runtime_packages=True,
try:
version = subprocess.check_output(
['git', 'describe'], cwd=colour.__path__[0]).strip()
+ version = version.decode('utf-8')
except subprocess.CalledProcessError:
version = colour.__version__
