1.2.0 readiness

- Updates branch aliases:
  - dev-master => 1.2.x-dev
  - dev-develop => 1.3.x-dev
- Updates CHANGELOG:
  - Combines 1.1.2 and 1.2.0 entries
  - Sets date for 1.2.0 release

CHANGELOG.md

@@ -2,32 +2,12 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 1.2.0 - TBD
+## 1.2.0 - 2019-12-27
 
 ### Added
 
 - [#23](https://github.com/zendframework/zend-config-aggregator/pull/23) adds the ability to specify the file mode for the generated cache file, when generating a cache file. The mode can be provided via the `Zend\ConfigAggregator\ConfigAggregator::CACHE_FILEMODE` configuration option. Modes should be expressed as octal values (e.g., `0600`).
 
-### Changed
-
-- Nothing.
-
-### Deprecated
-
-- Nothing.
-
-### Removed
-
-- Nothing.
-
-### Fixed
-
-- Nothing.
-
-## 1.1.2 - TBD
-
-### Added
-
 - [#21](https://github.com/zendframework/zend-config-aggregator/pull/21) adds support for PHP 7.3.
 
 ### Changed

composer.json

@@ -46,8 +46,8 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.1.x-dev",
-            "dev-develop": "1.2.x-dev"
+            "dev-master": "1.2.x-dev",
+            "dev-develop": "1.3.x-dev"
         }
     },
     "scripts": {