A couple of memo methods
Prefer consistent format
Do not edit dunderscored python files
ignore pydiff generated html files
Use Home and end to re-edit the last command

Keep the arrow keys for history search
Btter handling of arguments for py()
Smaller commands for diffing
Option to ignore files
Show the command line args to the devloper

This line is intended to be removed by developer anyway
    when the script is fleshed out