Fog 1.7.0

Reworked sunset/sunrise blending logic, now sunsets and sunrises work spectacularly with the Fog mod.
Added an option to disable the mod automatically when Iris shaders are active. This is enabled by default.
Added an option to disable the logic where the fog color would match the sky color when the player goes over a certain altitude. ("Enable High Altitude Fog")
Added an option to prioritize Polytone fog colors over Fog's fog definitions. ("Prioritize Polytone Fog Colors")