Prepares for 1.3.0 release

- Sets date in CHANGELOG
- Removes empty 1.2.1 stub in CHANGELOG

Author: weierophinney

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file, in reverse
 
 Releases prior to 1.2.0 did not have entries.
 
-## 1.3.0 - TBD
+## 1.3.0 - 2018-07-30
 
 ### Added
 
@@ -26,28 +26,6 @@ Releases prior to 1.2.0 did not have entries.
 
 - Nothing.
 
-## 1.2.1 - TBD
-
-### Added
-
-- Nothing.
-
-### Changed
-
-- Nothing.
-
-### Deprecated
-
-- Nothing.
-
-### Removed
-
-- Nothing.
-
-### Fixed
-
-- Nothing.
-
 ## 1.2.0 - 2018-06-25
 
 ### Added