Merge branch 'release-0.6.0'

Merge branch 'hotfix-0.5.2'

Merge branch 'hotfix-0.5.1'

merge release-0.5.0

Merge branch 'hotfix-0.4.2'

Fix godoc package comment. No real code changes. 100% backwards compa…

…tible with v0.4.0.

Release 0.4.0. Change to a flat package structure. Add support for

indexing and filters. Improve performance, and more.

add flags to tests and benchmarks to use custom host or database number.

release 0.3.2

release 0.3.1