Major update to usability:
-Much better frame rates
-better accuracy (removing more snow, probably won't remove anything else by mistake) except for grass
-Continuous mode is now default

The guide below explains how to make mods that remove voxels accurately (and not knowing this is the reason for the previous issues)
Sub-voxel precision with raycasts

Removes all grass reliably. (only noticed after the update)

Added continuous mode. (enable in settings and hold the use button rather than clicking). This can be bad for frame rates, so continuous mode defaults for lower values for the other settings.

Major rework of the Ui functions in the background, making them easier to work with. (the actual Ui did not actually change other than adding the continuous mode option)