Bump version to v0.6.8 (#609)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a23622d..03f0390 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+#0.6.8 (May 26, 2017)
+
+* Support Fuchia
+* POSIX AIO support
+* Fix memory leak caused by Register::new2
+* Windows: fix handling failed TCP connections
+* Fix build on aarch64-linux-android
+* Fix usage of `O_CLOEXEC` with `SETFL`
+
 # 0.6.7 (April 27, 2017)
 
 * Ignore EPIPE coming out of `kevent`
diff --git a/Cargo.toml b/Cargo.toml
index 4479cf5..1d652fb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name          = "mio"
-version       = "0.6.7"
+version       = "0.6.8"
 license       = "MIT"
 authors       = ["Carl Lerche <me@carllerche.com>"]
 description   = "Lightweight non-blocking IO"