[damned-lies] Add main to the list of HEAD branch names

[Claude Paroz <claudep src gnome org>]

commit 611475f955dc764f3c5b808da3794eb6d72061b3
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Aug 14 10:20:58 2020 +0200

    Add main to the list of HEAD branch names
    
    First asked for in #187, surely won’t be the last.

 stats/models.py | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/stats/models.py b/stats/models.py
index 3a46a47d..9620cae6 100644
--- a/stats/models.py
+++ b/stats/models.py
@@ -72,6 +72,7 @@ VCS_TYPE_CHOICES = (
 BRANCH_HEAD_NAMES = (
     'HEAD',
     'trunk',
+    'main',
     'mainline',
     'master',
 )