Fixed replacing reserved words.
Update changes.txt
Merge remote-tracking branch 'upstream/master'
Update changes.txt
Merge branch 'master' of https://github.com/jkbnerad/Elastica

Conflicts:
	changes.txt
Merge pull request #722 from jkbnerad/master

Fixed replacing reserved words.
Merge branch 'master' of https://github.com/krzaczek/Elastica