Facebook Js Ads Sdk Versions Save

Now containing (almost) all AdObjects 😄

@MartianLee added product feeds support and @malmgren fixed the issue where preflight errors were not caught. Thank you!

Added AdPixel, thanks to @talha-asad !

Big thanks to @nikrabaev

Adds Custom Audience

Many thanks to @dearcodes, @eranbetzalel and @jwelshiv.

adImage fix

Thanks to @talha-asad!

https://developers.facebook.com/docs/apps/changelog#v2_7