Unload textures when not seen by player and less detail to far away chunks

Unloads textures when not looked at by the player.

Examples:

If something is blocked by a hill, that thing blocked by that hill will not have textures loaded.

Textures inside caves will not be loaded when not in them/out of view

When things are further away from the player, minecraft uses less effort and power when loading things. (Is a mod)

These are changes to reduce/lower lag