Prepare Release 3.2.1 (ruflin#1100)

Prepare Elastica Release 3.2.0 (ruflin#1085)

Merge pull request ruflin#1060 from ruflin/release-3.1.1

Prepare 3.1.1 release.

Merge pull request ruflin#1041 from ruflin/release-3.1.0

Prepare CHANGELOG and composer.json for 3.1.0 release

Merge pull request ruflin#1024 from ruflin/release-3.0.1

Release 3.0.1

Merge pull request ruflin#1021 from ruflin/release-3.0.0

Release 3.0.0

Merge pull request ruflin#996 from ruflin/3.0.0-beta1

Prepare 3.0.0-beta1 Release

Merge pull request ruflin#961 from ruflin/release-2.3.1

Release 2.3.1

Merge pull request ruflin#930 from ruflin/release-2.3.0

Release 2.3.0

Merge pull request ruflin#912 from ruflin/release-2.2.1

Release 2.2.1