Bump version

CHANGELOG.md

+v3.0.0
+======
+* MAJOR: Upgrade to php7 (mandatory) and symfony 4.4.
+
 v2.5.8
 ======
 * BUG: Import Categories with space at beginning or the end

config/services.yaml

@@ -4,7 +4,7 @@
 # Put parameters here that don't need to change on each machine where the app is deployed
 # https://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
 parameters:
-    app.version: 2.5.8
+    app.version: 3.0.0
     use_as_sass: "%env(USE_AS_SAAS)%"
     locale: fr
     router.request_context.host: '%env(string:BASE_URL)%'