Use Nette 2.4 as minimal version

composer.json

@@ -18,32 +18,32 @@
 	"require": {
 		"php": ">=5.6",
 		"skautis/skautis": "~2.0@dev",
-		"nette/di": "~2.1@dev",
-		"nette/http": "~2.1@dev",
-		"nette/utils": "^2.4"
+		"nette/di": "^2.4@dev",
+		"nette/http": "^2.4@dev",
+		"nette/utils": "^2.4@dev"
 	},
 	"require-dev": {
 		"nette/tester": "~1.3",
-		"nette/nette": "~2.1@dev",
-		"nette/application": "~2.1@dev",
-		"nette/bootstrap": "~2.1@dev",
-		"nette/caching": "~2.1@dev",
-		"nette/component-model": "~2.1@dev",
-		"nette/database": "~2.1@dev",
-		"nette/deprecated": "~2.1@dev",
-		"nette/finder": "~2.1@dev",
-		"nette/forms": "~2.1@dev",
-		"nette/mail": "~2.1@dev",
-		"nette/neon": "~2.1@dev",
-		"nette/php-generator": "~2.1@dev",
-		"nette/reflection": "~2.1@dev",
-		"nette/robot-loader": "~2.1@dev",
-		"nette/safe-stream": "~2.1@dev",
-		"nette/security": "~2.1@dev",
-		"nette/tokenizer": "~2.1@dev",
-		"nette/utils": "~2.1@dev",
-		"latte/latte": "~2.1@dev",
-		"tracy/tracy": "~2.1@dev"
+		"nette/nette": "^2.4@dev",
+		"nette/application": "^2.4@dev",
+		"nette/bootstrap": "^2.4@dev",
+		"nette/caching": "^2.4@dev",
+		"nette/component-model": "^2.4@dev",
+		"nette/database": "^2.4@dev",
+		"nette/deprecated": "^2.4@dev",
+		"nette/finder": "^2.4@dev",
+		"nette/forms": "^2.4@dev",
+		"nette/mail": "^2.4@dev",
+		"nette/neon": "^2.4@dev",
+		"nette/php-generator": "^2.4@dev",
+		"nette/reflection": "^2.4@dev",
+		"nette/robot-loader": "^2.4@dev",
+		"nette/safe-stream": "^2.4@dev",
+		"nette/security": "^2.4@dev",
+		"nette/tokenizer": "^2.4@dev",
+		"nette/utils": "^2.4@dev",
+		"latte/latte": "^2.4@dev",
+		"tracy/tracy": "^2.4@dev"
 	},
     "suggest": {
         "tracy/tracy": "to enable skautis panel for Tracy debug bar.",