Add `google-contacts-lookup`.
Make an 'ext' directory.

This directory contains external scripts (scripts I didn't make.)
Update TODO.
Add `rotate-dir`.

This script rotates files from one directory to another and deletes the
old directory. If no destination directory is specified, the directory
one directory back from the source directory is used.
Add a more thorough description to `rotate-dir`.
Add `col-manip`.

This script manipulates lines of text based on specified columns.
Extend `drive-dump` to better handle drive permissions and location.

Devices without specified directories are assumed to be in '/dev'.
Devices are checked for readability before attempting to image them. If
a device is not mounted correctly, the script won't try to copy files
from it.
Add scripts to makefile.

This adds the following.
- ext/google-contacts-lookup
- col-manip
- rotate-dir
Update TODO.