Update dependencies, and fix tests from fallout

Cargo.toml

@@ -28,21 +28,22 @@ alloc = [ ]
 
 [dependencies]
 typenum        = "1.10"
-generic-array  = "0.11"
-rand           = { version = "0.5", default-features = false }
+generic-array  = "0.12"
+rand           = { version = "0.6", default-features = false }
 num-traits     = { version = "0.2", default-features = false }
 num-complex    = { version = "0.2", default-features = false }
 approx         = { version = "0.3", default-features = false }
 alga           = { version = "0.7", default-features = false }
-matrixmultiply = { version = "0.1", optional = true }
+matrixmultiply = { version = "0.2", optional = true }
 serde          = { version = "1.0", optional = true }
 serde_derive   = { version = "1.0", optional = true }
-abomonation    = { version = "0.5", optional = true }
+abomonation    = { version = "0.7", optional = true }
 mint           = { version = "0.5", optional = true }
-quickcheck     = { version = "0.6", optional = true }
+quickcheck     = { version = "0.7", optional = true }
 
 [dev-dependencies]
 serde_json = "1.0"
+rand_xorshift = "0.1"
 
 [workspace]
 members = [ "nalgebra-lapack", "nalgebra-glm" ]

nalgebra-lapack/Cargo.toml

@@ -34,6 +34,6 @@ lapack-src    = { version = "0.2", default-features = false }
 
 [dev-dependencies]
 nalgebra   = { version = "0.16", path = "..", features = [ "arbitrary" ] }
-quickcheck = "0.6"
+quickcheck = "0.7"
 approx     = "0.3"
-rand       = "0.5"
+rand       = "0.6"

src/geometry/quaternion_construction.rs

@@ -693,12 +693,13 @@ where
 
 #[cfg(test)]
 mod tests {
+    extern crate rand_xorshift;
     use super::*;
-    use rand::{self, SeedableRng};
+    use rand::SeedableRng;
 
     #[test]
     fn random_unit_quats_are_unit() {
-        let mut rng = rand::prng::XorShiftRng::from_seed([0xAB; 16]);
+        let mut rng = rand_xorshift::XorShiftRng::from_seed([0xAB; 16]);
         for _ in 0..1000 {
             let x = rng.gen::<UnitQuaternion<f32>>();
             assert!(relative_eq!(x.into_inner().norm(), 1.0))

src/geometry/rotation_specialization.rs

@@ -107,9 +107,10 @@ impl<N: Real> Rotation2<N> {
     ///
     /// # Example
     /// ```
+    /// # #[macro_use] extern crate approx;
     /// # use nalgebra::Rotation2;
     /// let rot = Rotation2::new(1.78);
-    /// assert_eq!(rot.angle(), 1.78);
+    /// assert_relative_eq!(rot.angle(), 1.78);
     /// ```
     #[inline]
     pub fn angle(&self) -> N {
@@ -158,10 +159,11 @@ impl<N: Real> Rotation2<N> {
     ///
     /// # Example
     /// ```
+    /// # #[macro_use] extern crate approx;
     /// # use nalgebra::Rotation2;
     /// let rot = Rotation2::new(0.78);
     /// let pow = rot.powf(2.0);
-    /// assert_eq!(pow.angle(), 2.0 * 0.78);
+    /// assert_relative_eq!(pow.angle(), 2.0 * 0.78);
     /// ```
     #[inline]
     pub fn powf(&self, n: N) -> Rotation2<N> {
@@ -566,7 +568,7 @@ impl<N: Real> Rotation3<N> {
     /// # use nalgebra::{Unit, Rotation3, Vector3};
     /// let axis = Unit::new_normalize(Vector3::new(1.0, 2.0, 3.0));
     /// let rot = Rotation3::from_axis_angle(&axis, 1.78);
-    /// assert_relative_eq!(rot.angle(), 1.78);
+    /// assert_eq!(rot.angle(), 1.78);
     /// ```
     #[inline]
     pub fn angle(&self) -> N {

src/geometry/unit_complex.rs

@@ -212,10 +212,11 @@ impl<N: Real> UnitComplex<N> {
     ///
     /// # Example
     /// ```
+    /// # #[macro_use] extern crate approx;
     /// # use nalgebra::UnitComplex;
     /// let rot = UnitComplex::new(0.78);
     /// let pow = rot.powf(2.0);
-    /// assert_eq!(pow.angle(), 2.0 * 0.78);
+    /// assert_relative_eq!(pow.angle(), 2.0 * 0.78);
     /// ```
     #[inline]
     pub fn powf(&self, n: N) -> Self {