Apigility DELETE via COLLECTION

[michalbundyra]

Bug with delete via Collection, json content sent is not injected in $data in deleteList method, need to do hardcode like:
$event = $this->getEvent();
$request = $event->getRequest();
$raw = $request->getContent();
$data = json_decode($raw);

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Originally posted by @zbintiosul at zfcampus/zf-apigility#94

[michalbundyra]

Already reported and in progress. zfcampus/zf-rest#59

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Originally posted by @TomHAnderson at zfcampus/zf-apigility#94 (comment)