ability to modify selected rows in the dataframe

[edgimar]

It would be nice to be able to modify dataframes in addition to viewing them. One example of this would be the possibility of selecting a range of rows, and being able to delete them. It could also be possible to modify the contents of rows.

Presumably this should provide a modified version of the dataframe that is accessible by whatever code has called show(). Perhaps it would be better to have something like a visual_edit(input_df) function which returns a modified copy of input_df?