## New Features
* Added formula input field in World creation tab for custom terrain generation
* Implemented comprehensive mathematical function system including trigonometric, logarithmic and special functions
* Added support for multiple variables (x, y, z) in formulas
## Improvements
* Optimized formula parsing and evaluation system
* Added clear error messages for invalid formulas
* Enhanced formula validation to prevent incorrect inputs
## Bug Fixes
* Fixed incorrect height calculations in extreme cases
