New features

Issue #2943362: Handle failed exports better by heddn: Handle failed exports better
Issue #2939636: Add Discount (promotion) as line item by trigdog, heddn: Add Discount (promotion) as line item

#2953472: Strings in template file are not translatable
#2953456: Missing modal image style

Fixed a bug in the ordering of the theme suggestion. Also added a readme file.

8.x-1.0-beta14:
- DFP: Support native ads (https://github.com/BurdaMagazinOrg/module-ad_entity/issues/22)

8.x-1.0-beta13:
- Fixed #2953257 by Insasse: Notice undefined index AdEntity.php

8.x-1.0-beta12:
- Bugfix by @milkovsky: Fix DFP display.
- DFP: Added CSS class "empty" for empty slots.
- DFP: Added support for Roadblocks.

Initial Release For AOS Module.

Read source properties from all the yaml rows not just the first one