DateTime::Event::WarwickUniversity version 0.02

Warwick University appear to have changed some of their future term dates, so I have released version 0.02 of DateTime::Event::WarwickUniversity to CPAN.

This release also fixes bugs which were happening when using DateTime objects with time zones, so everyone should probably upgrade.

Overall, I'm surprised that it took me a year before I had an excuse for a new release. It would be worth adding the ability to get a real date from a given term week, but I haven't quite needed it yet.