Perl and Gnuplot scripts to create a streamgraph of email
conversations. Sample output is in 'sgemail.png'. Usage:

1. Create a directory with one email per file. For example, Maildir
   format has this structure.

2. Change variable $me in 'extract' to a regular expression that
   matches your email address.

3. Generate the data file:

   $ ./extract /path/to/emails/* | ./histogram > sgemail.dat

4. Plot the streamgraph:

   $ gnuplot sgemail.gp

Author: Miroslav Urbanek <mu@miroslavurbanek.com>
Licence: GPL-3+
