Change test_core_compute.py, change in by
edit dplyr.py for change in by
edit test_dplyr.py for change in by
edit test_comprehensive.py for change in by
edit test_mongo_compute.py for change in by
edit test_python_compute.py for change in by
edit test_sql_compute.py for change in by
edit test_pandas_compute.py for change in by
edit test_spark.py for change in by
edit test_spark.py for change in test_chunks_compute.pyby
edit test_table for change in by
edit test_numpy_compute for change in by
edit table.py for by change
edit by in chunks.py
edit by in mongo.py
edit by in pandas
edit by in python.py
forgot to erase opening parenthesis in mongo.py
edit dplyr.py to  keep R compatibility
add computed property child in By in table.py