Release 7.13.0

Merge pull request #48 from elastic/richkuz/update-ci-to-711

Update CI to test latest version of stack

Merge pull request #45 from afoucret/test-image-nightly-build

Added nightly build support.

Merge pull request #38 from andsel/fix/typo_in_curl_flag

Minor, fixed typo in curl command line flag

Merge pull request #38 from andsel/fix/typo_in_curl_flag

Minor, fixed typo in curl command line flag

Release 7.8.0

Merge pull request #35 from afoucret/fix-ci-7.7.0

Update docker image to enterpise-search 7.7.0.

Merge pull request #29 from afoucret/meta-engine

Meta engine API support.

Release v7.5.0

Release 7.4.0