Add changelog for 1.0.9

Alias dev-master as 1.0

changelog.md

@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.
 
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.0.9]
+
+* Alias dev-master as 1.0
+* Update license year
+* Add code of conduct
+* Update documentation for userguide
+* Update translations
+
 ## [1.0.8]
 
 * Changelog added.

composer.json

@@ -10,9 +10,13 @@
 			"email": "mateusz@silverstripe.com"
 		}
 	],
-	"require":
-	{
+	"require": {
 		"silverstripe/framework": "3.*",
 		"silverstripe/cms": "3.*"
+	},
+	"extra": {
+		"branch-alias": {
+			"dev-master": "1.0.x-dev"
+		}
 	}
-}
+}