Release 0.19.1

Merge branch 'master' of github.com:aparo/pyes

Merge pull request aparo#118 from bsterne/patch-1

Make morelikethis support POST body queries and filters.

Added new search API with auto iterator.

Marked release 0.15

Added generated docs to .gitignore

Added comment

Added ReplicationShardOperationFailedException. Improved mapping pars…

…ing and generation.

Merge branch 'master' of https://github.com/sandymahalo/pyes

Added errors propagation in creating index, fixed string/list args pa…

…ssing