Heroic Asset Series Overworld Update 1.1

Hi! Please Understand! ^^ 

I have a little update for you here! 

I tried to add a few small details in each of the biomes. 

• New types of trees. Actually, there are not so many trees, but I tried to compensate for this versatility.  You can use any tree in all biomes.
• New rivers! One frozen river for the winter biome and one lava river for the inferno biome. Of course, I don't forget about frozen and lava lakes.
• Buildings and walls! Little, cute, cool! ^^
• Any other nice little things!

Enjoy!