I found one guys that made new Minedea.He wanted Minecraft to have 4 seasons. I can't explain it the way he did (he did it perfectly) so I just send the link to his blog and you will understand everything. You can ask him about crafting, time of seasons or other. He said he knows the answer to every question people give him.

Link to guy's blog:http://www.planetminecraft.com/blog/seasons---a-mindea/