client interface for Optic enhancements

[ehennum]

The enhancements are as follows.

fromSearch() accessor
fromSearchDocs() convenience

groupByUnion() and groupToArrays() modifiers
facetBy() convenience
group(), rollup(), cube(), and namedGroup() helpers
hasGroupKey() aggregate

bind-as() modifier

in() operator

[ehennum]

Includes unit tests for new builder methods

SQL and Query DSL payloads on rows.query() still to come

[ehennum]

Should have full parity with Java now.