[Pharo-project] Fwd: Better senders/implementers UI

Begin forwarded message:

Scott Wallace made a nice improvement to the regular senders/ implementers browsers. It reuses in the same window, and adds a history pane so you can see how you got to a certain point, and can back track if necessary.

This has not been updated since 3.8 I think, but if properly integrated rather than as separate package it might be quite nice:

http://www.squeaksource.com/Green.html