bump rand -> 0.7, fix unused macro warnings in tests

Cargo.toml

@@ -24,7 +24,7 @@ swizzle = []
 approx = "0.3"
 mint = { version = "0.5", optional = true }
 num-traits = "0.2"
-rand = { version = "0.6", optional = true }
+rand = { version = "0.7", optional = true }
 serde = { version = "1.0", features = ["serde_derive"], optional = true }
 simd = { version = "0.2", optional = true }
 

tests/matrix.rs

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#[macro_use]
 extern crate approx;
 extern crate cgmath;
 

tests/point.rs

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#[macro_use]
 extern crate approx;
 extern crate cgmath;
 

tests/quaternion.rs

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#[macro_use]
 extern crate approx;
 extern crate cgmath;
 

tests/transform.rs

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#[macro_use]
 extern crate approx;
 extern crate cgmath;
 

tests/vector.rs

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#[macro_use]
 extern crate approx;
 extern crate cgmath;
 

tests/vector4f32.rs

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#[macro_use]
 extern crate approx;
 extern crate cgmath;