[mod] remove done todolist
[fix] conflicting function name with another function
[enh] prepare field for inner grouping
[enh] add a dummy test
[enh] group inner on (
[mod] add possibility to not show diff in test loop
[enh] handle situation where token already have one space
[enh] handle case where token already have before and after space
[enh] handle grouping both endl
[enh] handle comma case
[fix] start to handle before grouping situation and start to have conflict with ENDMARKER
[enh] handle a more complex situation
[enh] inner group for sets
[enh] handle inner grouping for dict
[enh] add protective assert
[enh] handle inner grouping for list
[enh] start to manage endl in tuples definition