0.05 Thu May 22 2014 Pavel Shaydo <zwon@cpan.org>
    - remove type parameter from aggregators
    - automatically update model time when event added
    - support aggregators limited by count and duration at the same time
    - update time window for count aggregators

0.04 Tue May 20 2014 Pavel Shaydo <zwon@cpan.org>
    - implement batch mode for time aggregators
    - require perl 5.10

0.03 Sun May 18 2014 Pavel Shaydo <zwon@cpan.org>
    - completely reworked version

0.02 Mon Apr  7 2014 Pavel Shaydo <zwon@cpan.org>
    - fix dependencies

0.01 Sun Apr  6 2014 Pavel Shaydo <zwon@cpan.org>
    - First version, released on an unsuspecting world.