Significant change:

Instead of using one data file, with @Home context on separate tab, this
reads from two data files.   One is todo.txt found in the TODO_DIR
environment variable, and one in c:\dropbox\todo

You need to write "w" to them individualy.

They're still in separate tabs.
Merge branch 'master' of https://github.com/mstave/tdg

Conflicts:
	tdg.py
merging udpates for dual files