added	tests/spec/int_series_ops/test_conversion.py
added	tests/spec/int_series_ops/test_division_ops.py
added	tests/spec/multi_code_string_series_ops/__init__.py
added	tests/spec/multi_code_string_series_ops/test_containment.py
added	tests/spec/population/__init__.py
added	tests/spec/population/test_population.py
added	tests/spec/series_ops/__init__.py
added	tests/spec/series_ops/test_containment.py
added	tests/spec/series_ops/test_containment_with_series.py
added	tests/spec/series_ops/test_equality.py
added	tests/spec/series_ops/test_map_values.py
added	tests/spec/series_ops/test_maximum_of_and_minimum_of_event_series.py
added	tests/spec/series_ops/test_maximum_of_and_minimum_of_patient_series.py
added	tests/spec/series_ops/test_when_null_then.py
added	tests/spec/sort_and_pick/__init__.py
added	tests/spec/sort_and_pick/test_sort_by_column_and_pick.py
added	tests/spec/sort_and_pick/test_sort_by_column_with_nulls_and_pick.py
added	tests/spec/sort_and_pick/test_sort_by_interleaved_with_where.py
added	tests/spec/sort_and_pick/test_sort_by_multiple_columns_and_pick.py
added	tests/spec/sort_and_pick/test_sort_extends_to_all_columns_when_underspecified.py
added	tests/spec/str_series_ops/__init__.py
added	tests/spec/str_series_ops/test_contains.py
added	tests/spec/table_from_rows/__init__.py
added	tests/spec/table_from_rows/test_table_from_rows.py
added	tests/spec/tables.py