Allow streaming pages and rows in Table APIs; renames

[alechenninger]

This would allow you to get all rows in all pages (or filter all rows within all pages)... at least I think it should work.

MyPaginatedTable paginatedTable = ...
paginatedTable.getAscendingPages()
    .flatMap(MyPaginatedTable::getRows)
    .forEach(r -> r.getCell(MY_COLUMN).doSomething());

[coveralls]

Coverage decreased (-0.5%) to 74.89% when pulling 3135c8e on table-streams into fbe54fc on master.

[alechenninger]

/cc @abocz @dmcneil @jvervaec