Change simd to repr simd & bump version number

With [SIMD groundwork part
1](rust-lang/rust#27169)
the simd feature is now repr_simd.

Author: bjwbell

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "euclid"
-version = "0.1.5"
+version = "0.1.6"
 authors = ["The Servo Project Developers"]
 description = "Geometry primitives"
 documentation = "http://doc.servo.org/euclid/"

src/lib.rs

@@ -7,7 +7,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(asm, custom_derive, plugin, simd, zero_one, test)]
+#![feature(asm, custom_derive, plugin, repr_simd, zero_one, test)]
 
 #![plugin(serde_macros)]
 

src/side_offsets.rs

@@ -76,7 +76,7 @@ impl<T: Zero> SideOffsets2D<T> {
 
 /// A SIMD enabled version of SideOffsets2D specialized for i32.
 #[derive(Clone, Copy, PartialEq)]
-#[simd]
+#[repr(simd)]
 #[cfg_attr(feature = "heap_size", derive(HeapSizeOf))]
 pub struct SideOffsets2DSimdI32 {
     pub top: i32,