Translation update
Added the following translations:
- Spanish (by OneMoonEye, Pawhcha, Sergio Chinchilla, Yulissa Seguel)
- Ukrainian (by Coconut, Sottery, λάμβδα)
- Indonesian (by ███)
Refined the Turkish translation (by Eren Demirbaş, Lakunake, Umutt)
Fixed a few other translation issues
Added two official illustrations and several amazing fanarts to the gallery (with artists' permission!)