5a60355c394b30e4727304d2fa939a02512d75e4 Wed May 14 02:28:51 UTC 2014 runout-at <markus@runout.at> start-due date
add options for stst date and due date
<todo start:YYYY-MM-DD>Text</todo>
<todo due:YYYY-MM-DD>Text</todo>
<todo start:YYYY-MM-DD due:YYYY-MM-DD>Text</todo>
color output if todo has started or is due