windows paths in config files striped to their drive letter when parsed

[Ryex]

the regexp that pulls variable out of config files does not work if there are windows paths, thus preventing proper use of todo.py on windows

strip_re = re.compile('\w+\s([A-Za-z_$="./01]+).*')

as you can see that match group is missing the \ and : characters so windows paths get reduced to the drive letter when they are pulled out.

a fixed line looks like

strip_re = re.compile('\w+\s([A-Za-z_$="./01\\\\:]+).*')

this fix let todo.py work properly for me.

[sigmavirus24]

Care to send a PR? I'll happily merge that