Hitori version 0.2

It's been a long time coming, but here's Hitori version 0.2!

As a short overview, the new version introduces:

• Dynamic board sizing (allowing for boards from 5×5 to 10×10)
• Rendering improvements, a Tangoisation, and a conversion to use GtkStyle
• Relicense to GPLv3+
• A new user manual!
• Improvements to the algorithms, halving memory usage in the best case
• A new icon by Jakub Szypulka
• A desktop file

Hitori now depends on GTK+ >= 2.13, so it may not be easily compilable on some distributions, which is an unfortunate side-effect of using the new gtk_show_uri function.

As before, please contact me to report bugs.

I don't really have any plans to extend the program any further, but if anybody has any ideas, I'm open to them.