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django/docs/releases/1.7.5.txt

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Django 1.7.5 release notes
==========================
*Under development*
Django 1.7.5 fixes several bugs in 1.7.4.
Bugfixes
========
* Reverted a fix that prevented a migration crash when unapplying
``contrib.contenttypes``s or ``contrib.auth``s first migration
(:ticket:`24075`) due to severe impact on the test performance
(:ticket:`24251`) and problems in multi-database setups (:ticket:`24298`).
* Fixed a regression that prevented custom fields inheriting from
``ManyToManyField`` from being recognized in migrations (:ticket:`24236`).
* Fixed crash in ``contrib.sites`` migrations when a default database isn't
used (:ticket:`24332`).
* Added the ability to set the isolation level on PostgreSQL with psycopg2 ≥
2.4.2 (:ticket:`24318`). It was advertised as a new feature in Django 1.6
but it didn't work in practice.