Django 1.8.9 版本发行说明

Django 1.8.9 fixes several bugs in 1.8.8.

• Fixed a regression that caused the “user-tools” items to display on the admin’s logout page (#26035).
• Fixed a regression that caused the incorrect day to be selected when opening the admin calendar widget for timezones from GMT+0100 to GMT+1200 ().
• Fixed a regression in 1.8.8 causing incorrect index handling in migrations on PostgreSQL when adding or unique=True to a CharField or TextField that already had the other specified, or when removing one of them from a field that had both, or when adding to a field already listed in unique_together (#26034).
• Fixed a crash when using a reverse in ModelAdmin.readonly_fields ().
• Fixed a regression in Django 1.8.5 that broke copying a SimpleLazyObject with copy.copy() (#26122).