Changes since tag 2.7.5.7

commit 5cbc855dbe2410a6dd32ec41a57ce4caa11e0965
Author: Archarodim <Archarodim@teaser.fr>
Date:   Sun May 6 23:46:10 2018 +0200

    WoW 8 basic compatibility fix

commit 646f8a433f4ca8567e929cbc17b9981c7c886a41
Author: Archarodim <Archarodim@teaser.fr>
Date:   Fri Apr 27 08:25:37 2018 +0200

    Add protection from bad or corrupt custom spell configuration

