Merge branch 'release-v2.1.8' into develop
Add BigCouch support to river last_seq handling
Change bad api_key error message to s/auth_token/api_key/
Smarter v1:river_test task uses last_seq and no longer orphans test doc
Implement v1:search_shard_status rake task
Fix handling of multiple phrase searches in the same field
Version 2.1.9
Merge branch 'release-v2.1.9'