Merge pull request #403 from codegangsta/changelog-tweak

Move the `./runtests` changelog entry to up `Unreleased`

CHANGELOG.md

@@ -3,6 +3,8 @@
 **ATTN**: This project uses [semantic versioning](http://semver.org/).
 
 ## [Unreleased]
+### Added
+- `./runtests` test runner with coverage tracking by default
 
 ## [1.17.0] - 2016-05-09
 ### Added
@@ -10,7 +12,6 @@
 - `context.GlobalBoolT` was added as an analogue to `context.GlobalBool`
 - Support for hiding commands by setting `Hidden: true` -- this will hide the
   commands in help output
-- `./runtests` test runner with coverage tracking by default
 
 ### Changed
 - `Float64Flag`, `IntFlag`, and `DurationFlag` default values are no longer