logging requests #385 PSR-3
Merge remote-tracking branch 'upstream/master'
#389
#389 fix logTest
#389 add same test
teste de merge:
#389 fix name property/add RuntimeException/modify changes.txt
add php5.4  for test and env
fix travis
fix travis
modify env travis
notify Elastica\Log param changes in the changes.txt
update styte psr-3
Merge pull request #389 from andrey1s/master

add support psr-3 for logging request
#330 Add _meta to mapping.
Update changes.txt
Merge pull request #393 from jlinn/master

Add _meta to mapping
Can now use scroll
Update changes.txt
Merge pull request #392 from odolbeau/feat-scroll

Can now use scroll