Prepares for 3.2.0 release

- Removes empty 3.1.1 stub from CHANGELOG
- Sets date for 3.2.0 release in CHANGELOG
- Updates branch aliases:
  - dev-master => 3.2.x-dev
  - dev-develop => 3.3.x-dev

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.
 
-## 3.2.0 - TBD
+## 3.2.0 - 2018-08-01
 
 ### Added
 
@@ -27,28 +27,6 @@ All notable changes to this project will be documented in this file, in reverse
 
 - Nothing.
 
-## 3.1.1 - TBD
-
-### Added
-
-- Nothing.
-
-### Changed
-
-- Nothing.
-
-### Deprecated
-
-- Nothing.
-
-### Removed
-
-- Nothing.
-
-### Fixed
-
-- Nothing.
-
 ## 3.1.0 - 2018-06-18
 
 ### Added

composer.json

@@ -50,8 +50,8 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "3.1.x-dev",
-            "dev-develop": "3.2.x-dev"
+            "dev-master": "3.2.x-dev",
+            "dev-develop": "3.3.x-dev"
         },
         "zf": {
             "component": "Zend\\Router",