Added version test

libpurple_to_markdown/__init__.py

@@ -5,6 +5,9 @@ from pathlib import Path
 import bs4
 import logging
 
+from ._version import __version__
+__all__ = ['__version__']
+
 logger = logging.getLogger(__name__)
 
 @dataclasses.dataclass(frozen=True, order=True)

test/test_init.py

@@ -0,0 +1,4 @@
+import libpurple_to_markdown
+
+def test_version():
+    assert libpurple_to_markdown.__version__ is not None