Initialise the new module boilerplate

test/test_version.py

@@ -0,0 +1,9 @@
+"""Version test module."""
+
+
+def test_version_fails_gracefully(mocker):
+    target = 'pkg_resources.get_distribution'
+    with mocker.patch(target, side_effect=Exception()):
+        from merkle-tree-stream.__init__ import __version__
+
+        assert __version__ == 'unknown'