Update branch aliases and bump minimum deps

Author: Xerkus

composer.json

@@ -14,7 +14,7 @@
     },
     "require": {
         "php": "^5.6 || ^7.0",
-        "zendframework/zend-stdlib": "^2.7 || ^3.0",
+        "zendframework/zend-stdlib": "^2.7.6 || ^3.1",
         "container-interop/container-interop": "^1.1"
     },
     "require-dev": {
@@ -45,8 +45,8 @@
     "prefer-stable": true,
     "extra": {
         "branch-alias": {
-            "dev-master": "2.8-dev",
-            "dev-develop": "2.9-dev"
+            "dev-master": "2.9-dev",
+            "dev-develop": "2.10-dev"
         },
         "zf": {
             "component": "Zend\\Validator",