Update CHANGELOG for v0.12.0

Author: cheungpat

CHANGELOG.md

@@ -1,3 +1,20 @@
+## 0.12.0 (2016-05-30)
+
+### Incompatible changes
+
+- Read all config from ENVVAR and support .env files (#35)
+
+### Bug fixes
+
+- Make `_user` email/username to be case insensitive at pq (#41)
+- Fix the public read record ACL bug on non readable (#39)
+- Consider deleting non-existing device as success
+
+### Other Notes
+
+- Update the doc link to http://docs.skygear.io/ (#37) 
+- Update travis build status badge
+
 ## 0.11.0 (2016-05-09)
 
 ### Features

skyversion/version.go

@@ -15,7 +15,7 @@
 package skyversion
 
 // This will be overwrite on build time.
-var version = "v0.11.0"
+var version = "v0.12.0"
 
 // Version returns the version of Skygear
 func Version() string {