remove parseRawExpression; change to updating parsed expressions
remove parseRawExpression; change to updating parsed expressions

ChristopherChudzicki/math3d,stardust66/math3d,stardust66/math3d,stardust66/math3d,ChristopherChudzicki/math3d,stardust66/math3d,ChristopherChudzicki/math3d,ChristopherChudzicki/math3d