release: changelog notes for 0.5.1

Signed-off-by: Paul Osborne <[email protected]>

Author: posborne

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Change Log
 
+## [0.5.1] - 2016-06-17
+
+### Changed
+
+- The crate now compiles (to more-or-less nothing) on OSX which can be useful in some
+  contexts.
+- Multiple warnings from clippy were addressed
+- Support for some older versions of rust was dropped and things like `?` are now used in the codebase.
+- Additional traits like `Copy` added where appropriate in some places.
+
 ## [0.5.0] - 2016-12-18
 
 ### Changed
@@ -138,6 +148,7 @@
 - Initial version of the library with basic functionality
 - Support for `export`/`unexport`/`get_value`/`set_value`/`set_direction`
 
+[0.5.1]: https://github.com/posborne/rust-sysfs-gpio/compare/0.5.0...0.5.1`
 [0.5.0]: https://github.com/posborne/rust-sysfs-gpio/compare/0.4.4...0.5.0
 [0.4.4]: https://github.com/posborne/rust-sysfs-gpio/compare/0.4.3...0.4.4
 [0.4.3]: https://github.com/posborne/rust-sysfs-gpio/compare/0.4.2...0.4.3