added rescore query
added weight setters
added rescore test stubs
Finished rescore and tests
fixed naming and added changes to changes.txt
added elasticsearch test for rescore
fixed changes.txt conflict
fixed naming convention again
restructured rescore classes and added setRescore to both Query and Search and the accompanying tests
updated changes.txt
removed some outdated changes
bulk update added
Add some Match query parameters for MultiMatch query
Add missing settings for Match Query
Add author
Add more match options
There doesn't seem fuzzy_rewrite
tests added for bulk update operation
tests added for bulk update operation
Elastica\Result should have hasFields() method

To make it consistent with Elastica\Document