release: 2.11.0 readiness

- set release date in CHANGELOG.md
- update branch aliases
  - dev-master => 2.11.x-dev
  - dev-develop => 2.12.x-dev
- remove empty stub in CHANGELOG.md

Author: michalbundyra

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.11.0 - TBD
+## 2.11.0 - 2019-12-31
 
 ### Added
 
@@ -26,28 +26,6 @@ All notable changes to this project will be documented in this file, in reverse
 
 - [#146](https://github.com/zendframework/zend-db/pull/146) fixes setting correct value for `lastInsertValue` pre-insert in `SequenceFeature`.
 
-## 2.10.2 - TBD
-
-### Added
-
-- Nothing.
-
-### Changed
-
-- Nothing.
-
-### Deprecated
-
-- Nothing.
-
-### Removed
-
-- Nothing.
-
-### Fixed
-
-- Nothing.
-
 ## 2.10.1 - 2019-12-31
 
 - Nothing.

composer.json

@@ -50,8 +50,8 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.10.x-dev",
-            "dev-develop": "2.11.x-dev"
+            "dev-master": "2.11.x-dev",
+            "dev-develop": "2.12.x-dev"
         },
         "zf": {
             "component": "Zend\\Db",