Merge pull request treasure-data#882 from treasure-data/release_v0.9.30

Release v0.9.30

Merge pull request treasure-data#879 from treasure-data/release_v0.9.29

Release v0.9.29

Merge pull request treasure-data#875 from muga/change_dockerfile_to_i…

…nstall_redis_2

Change Dockerfile and bootstrap/entrypoint.sh to start redis server

Minor update release-0.9.27.rst to change release date

Merge pull request treasure-data#805 from hiroyuki-sato/fix-pg-doc

[doc] Fix store_last_results description in pg operator.

Fix v0.9.25 release date

Bump version to 0.9.24