Added semicolons as to not screw up Vim's auto-indentation, made some more arguments const, and implemented vector:cross/2.
Added semicolons as to not screw up Vim's auto-indentation, made some more arguments const, and implemented vector:cross/2.

SkewedAspect/precursors-server,SkewedAspect/precursors-server,SkewedAspect/precursors-server,SkewedAspect/precursors-server