After a lot of work on the code, I am happy to present a new version of Vivaldi. The plugin has been rewritten from scratch and now works in a completely different way. Better way. More logical way. But let's start in order.
Custom biomes
Each (well, almost) biome now has four seasonal versions of itself. Absolutely everything is configurable: temperature, color of grass, water, leaves, and even fog and sky. Unfortunately, due to the fact that FAWE cannot work with custom biomes, I had to stop use it as a biome changer. I wrote my biome changer and it turned out to be pretty slow and lazy. However, it does not load the server. Everything is asynchronous.
Resourcepack and OptiFine are no longer required. Yay!
Here are some screenshots:
Please report any bugs you find. Testing is needed. Don't use on commercial servers. DO BACKUPS!!!