Make the struct and traits modules private.

Now that the documentation of public export of private modules is inlined on the exporter's
documentation, there is non need to export anything but the `na` module.

src/lib.rs

@@ -119,8 +119,8 @@ extern mod std;
 extern mod extra;
 
 pub mod na;
-pub mod structs;
-pub mod traits;
+mod structs;
+mod traits;
 
 // mod lower_triangular;
 // mod chol;

src/na.rs

@@ -45,7 +45,7 @@ pub use structs::{
     Mat1, Mat2, Mat3, Mat4,
     Mat5, Mat6,
     Rot2, Rot3, Rot4,
-    Vec0, Vec1, Vec2, Vec3, Vec4, Vec5, Vec6
+    Vec0, Vec1, Vec2, Vec3, PVec3, Vec4, Vec5, Vec6
 };
 
 //

src/structs/mod.rs

@@ -2,17 +2,17 @@
 
 pub use self::dmat::DMat;
 pub use self::dvec::DVec;
-pub use self::vec::{Vec0, Vec1, Vec2, Vec3, Vec4, Vec5, Vec6};
+pub use self::vec::{Vec0, Vec1, Vec2, Vec3, PVec3, Vec4, Vec5, Vec6};
 pub use self::mat::{Identity, Mat1, Mat2, Mat3, Mat4, Mat5, Mat6};
 pub use self::rot::{Rot2, Rot3, Rot4};
 pub use self::iso::{Iso2, Iso3, Iso4};
 
-pub mod dmat;
-pub mod dvec;
-pub mod vec;
-pub mod mat;
-pub mod rot;
-pub mod iso;
+mod dmat;
+mod dvec;
+mod vec;
+mod mat;
+mod rot;
+mod iso;
 
 // specialization for some 1d, 2d and 3d operations
 #[doc(hidden)]