ipy_leo: push_plain_python (if P suffix in headstring)

ipy_leo improvements (%leo opens a file as @auto file)

ipy_leo: rename wb..val => wb..v, %leo now opens a file in leo

initialization (no svn history)

_ip.runlines() is now much more liberal about indentation - it cleans up the scripts it gets

ipy_leo: track results in leo tab

ipy_leo: notes on leo log

ipy_leo: 'wb' is now the more 'advanced' workbook

ipy_leo: you can now do nodes.foo = 'hello', nodes.<tab> works

ipy_leo: handle @ipy varname on leox.push()