Fix version.py: restore __version_info__ and get_version_info exports

Author: neuromechanist

src/version.py

@@ -1,8 +1,14 @@
 """Version information for HEDit."""
 
 __version__ = "0.6.7a1"
+__version_info__ = (0, 6, 7, "alpha")
 
 
 def get_version() -> str:
-    """Return the current version string."""
+    """Get the current version string."""
     return __version__
+
+
+def get_version_info() -> tuple:
+    """Get the version info tuple (major, minor, patch, prerelease)."""
+    return __version_info__