Use proper semver

composer.json

@@ -14,8 +14,8 @@
 	],
 	"require":{
 		"php": ">=5.4",
-		"cakephp/cakephp": "~3.1",
-		"dereuromark/cakephp-shim": "~1.0"
+		"cakephp/cakephp": "^3.2",
+		"dereuromark/cakephp-shim": "^1.0"
 	},
 	"require-dev":{
 		"mobiledetect/mobiledetectlib": "2.*",