Pluck and without tests
Merge branch 'ql-refactor' of github.com:rethinkdb/rethinkdb into ql-refactor
Merge branch 'ql-refactor' of github.com:rethinkdb/rethinkdb into ql-refactor
Some transformation tests
Merge branch 'ql-refactor' of github.com:rethinkdb/rethinkdb into ql-refactor