Change log 0.17

Change Log
  1. Support for various mappings from twin cones to sphere
  2. Implemented two such mappings: circular mapping and even heights mapping
  3. Reworked DEM generator. The ability to use one of two interpolation methods: interpolation on DEM data (reverse), or on conical lattice data (direct)
  4. Reworked biomes. Three method of generation: curves (or fractal, similar to earlier one, but more unpredictable), belts (more distinct and predictable placement of biomes), regions (completely unpredictable behavior and non-compliance with the longitudinal nature of biomes)