Merge branch '2.0' into gitee2

.github/stale.yml

@@ -1,5 +1,5 @@
 # Number of days of inactivity before an issue becomes stale
-daysUntilStale: 90
+daysUntilStale: 120
 # Number of days of inactivity before a stale issue is closed
 daysUntilClose: 7
 # Issues with these labels will never be considered stale

src/Form/Field/Tree.php

@@ -81,7 +81,7 @@ class Tree extends Field
     {
         $this->options['checkbox']['three_state'] = $value;
 
-        return $this;
+        return $this->exceptParentNode($value);
     }
 
     /**