compile: Add comments ergarding non-implemented relative imports.
diff --git a/py/compile.c b/py/compile.c
index 40047d7..c895b26 100644
--- a/py/compile.c
+++ b/py/compile.c
@@ -1187,10 +1187,12 @@
             }
         } else {
             // TODO not implemented
+            // This covers relative imports starting with dot(s) like "from .foo import"
             assert(0);
         }
     } else {
         // TODO not implemented
+        // This covers relative imports with dots only like "from .. import"
         assert(0);
     }
 }