Suggestion: add gravity strength manipulation

[ImSpaceLover]

For example making gravity strength 0.16 instead of 1 would make gravity similar to the Moon's gravity.

[muzikbike]

Perhaps instead of having directional gravity, we could have three intensity values per axis? The values for X and Z would be 0 by default, and values could be set to allow for arbitrary directions and intensities of gravity (with negative values corresponding to gravity int he negative direction and positive values to the positive direction).