* 0.5.6
The total email statistic data is now beeing used.

* 0.5.2
Fixed those bugs:
1. "mailstats2sql": Data from for an example day 14 was stored in row 13.
2. Zero-lines were drawn lower than they should be.

* 0.5.1
Changed the titles of some diagrams.

* 0.5.0
First public release.

