slightly restrict signature of normalize to avoid an ambiguity with a new Base method

Author: KristofferC

src/spatial/threevectors.jl

@@ -76,7 +76,7 @@ LinearAlgebra.dot(v1::FreeVector3D, v2::FreeVector3D) = begin @framecheck(v1.fra
 Base.:*(t::Transform3D, vector::FreeVector3D) = begin @framecheck(t.from, vector.frame); FreeVector3D(t.to, rotation(t) * vector.v) end
 Base.:\(t::Transform3D, point::FreeVector3D) = begin @framecheck point.frame t.to; FreeVector3D(t.from, rotation(t) \ point.v) end
 LinearAlgebra.norm(v::FreeVector3D) = norm(v.v)
-LinearAlgebra.normalize(v::FreeVector3D, p = 2) = FreeVector3D(v.frame, normalize(v.v, p))
+LinearAlgebra.normalize(v::FreeVector3D, p::Real = 2) = FreeVector3D(v.frame, normalize(v.v, p))
 
 # Mixed Point3D and FreeVector3D
 Base.:+(p1::FreeVector3D, p2::FreeVector3D) = begin @framecheck(p1.frame, p2.frame); FreeVector3D(p1.frame, p1.v + p2.v) end