Add not equal (MUST_NOT) to findBy repository methode: attribute must…

… beginning by "!" (ongr-io#797)

* update mapping cache issue (ongr-io#726)

* version bump to 5.1 for master branch alias

* reset composer.json

quick fix of mistyped symfony 2.8

Upgrades (ongr-io#821)

* upgrade elastic to 5.6.3, remove hhvm testing, add sf 3.3 adn 3.4

* Add compatibility with Symfony 3.4 for DataCollectorInterface

Instance Cache added to DocumentParser::parse() (ongr-io#788)

- I've discovered that this method was being called a lot of times when indexing large volumes of documents with my bulk indexer code.
- Constantly parsing a Reflection class was becoming too costly so I've added an instance cache to store the document information.

changed get getScrollConfiguration to public (Closes ongr-io#768)

added default result structure for findbyids (ongr-io#771)

Merge remote-tracking branch 'remotes/upstream/1.2' into 5.0

# Conflicts:
#	Tests/Functional/Result/DocumentIteratorTest.php
#	Tests/Functional/Service/ManagerTest.php

load Embedded metaFields (ongr-io#755)

fixing issues with sf 2.7 and slow index creation (ongr-io#754)

introduce hashmap annotation (ongr-io#747)