Automated Windows builds

[NiLSPACE]

The new world generators are developed on a separate source code branch and therefore not visible in the "normal" builds. They'll stay so until I merge the branch, which won't happen until I get most of them working.

Also, there's really nothing to see yet - only the most basic generator parts have been written, mostly to test the whole structure underneath:
- Constant and Checkerboard biomes
- Flat terrain height
- DebugBiomes terrain composition (makes all the terrain blocks in one biome the same block, essentially "displaying" the biome live in the client.

so in that release are there no biomes??