core: add helper for computing stats; use it in modules

my/github/ghexport.py

@@ -29,7 +29,7 @@ class github(user_config):
     def dal_module(self):
         rpath = self.ghexport
         if rpath is not None:
-            from .core.common import import_dir
+            from ..core.common import import_dir
             return import_dir(rpath, '.dal')
         else:
             import my.config.repos.ghexport.dal as dal
@@ -81,6 +81,13 @@ def events(dal=_dal()) -> Results:
         yield _parse_event(d)
 
 
+def stats():
+    from ..core import stat
+    return {
+        **stat(events),
+    }
+
+
 # TODO hmm. need some sort of abstract syntax for this...
 # TODO split further, title too
 def _get_summary(e) -> Tuple[str, Optional[str], Optional[str]]: