Support recently released tornado 3.2.1

Please, release a new version and upload it to PyPI.

Having tornado 3.2.1 installed, all tests pass:

    $ pip list | grep tornado
    tornado (3.2.1)
    
    $ make test
    Cleaning up build and *.pyc files...
    Done!
    test_can_put_and_delete_document (unit.test_tornadoes.TestESConnection) ... ok
    test_count_specific_index (unit.test_tornadoes.TestESConnection) ... ok
    test_count_specific_query (unit.test_tornadoes.TestESConnection) ... ok
    test_count_specific_query_with_many_parameters (unit.test_tornadoes.TestESConnection) ... ok
    test_count_specific_query_with_parameters (unit.test_tornadoes.TestESConnection) ... ok
    test_count_specific_type (unit.test_tornadoes.TestESConnection) ... ok
    test_search_apecific_type (unit.test_tornadoes.TestESConnection) ... ok
    test_search_for_specific_type_with_query (unit.test_tornadoes.TestESConnection) ... ok
    test_search_specific_index (unit.test_tornadoes.TestESConnection) ... ok
    test_should_access_specific_documento (unit.test_tornadoes.TestESConnection) ... ok
    test_should_accumulate_searches_before_search (unit.test_tornadoes.TestESConnection) ... ok
    test_should_clean_search_list_after_search (unit.test_tornadoes.TestESConnection) ... ok
    test_should_generate_empty_header_with_no_index_specified (unit.test_tornadoes.TestESConnection) ... ok
    test_should_make_two_searches (unit.test_tornadoes.TestESConnection) ... ok
    test_simple_search (unit.test_tornadoes.TestESConnection) ... ok
    test_can_put_and_delete_document (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_count_specific_index (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_count_specific_query (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_count_specific_query_with_many_parameters (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_count_specific_query_with_parameters (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_count_specific_type (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_search_apecific_type (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_search_for_specific_type_with_query (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_search_specific_index (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_should_access_specific_documento (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_should_clean_search_list_after_search (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_should_make_two_searches (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok
    test_simple_search (unit.test_tornadoes.TestESConnectionWithTornadoGen) ... ok

    ----------------------------------------------------------------------
    Ran 28 tests in 1.838s

    OK