Updated CHANGELOG

- Added date for 3.1.0
- Removed empty stub for 3.0.2

Author: weierophinney

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 3.1.0 - TBD
+## 3.1.0 - 2016-09-13
 
 ### Added
 
@@ -25,24 +25,6 @@ All notable changes to this project will be documented in this file, in reverse
 
 - Nothing.
 
-## 3.0.2 - TBD
-
-### Added
-
-- Nothing.
-
-### Deprecated
-
-- Nothing.
-
-### Removed
-
-- Nothing.
-
-### Fixed
-
-- Nothing.
-
 ## 3.0.1 - 2016-04-12
 
 ### Added