update

@@ -76,10 +76,13 @@ def main():
 
 def get_contributors(git_dir):
     result = set()
+    emails = set()
 
-    for x in git(git_dir, "log", "--format=%aN").splitlines():
-        if x != "root":
-            result.add(x)
+    for x in git(git_dir, "log", "--format=%aN|%aE").splitlines():
+        name, email = x.rsplit("|", 1)
+        if name != "root" and email not in emails:
+            emails.add(email)
+            result.add(name)
 
     return list(sorted(result, key=lambda x: x.lower()))