Remove version constraint for flow

The Version constraint for 3.0.4 breaks the introduced compatibility for flow < 3.0, 2.3.11 for example uses the same method signature in "echoExceptionWeb".

Author: monofone

composer.json

@@ -4,12 +4,12 @@
     "license": "MIT",
     "description": "A sentry client for Flow and Neos",
     "require": {
-        "typo3/flow": ">= 3.0.4",
+        "typo3/flow": "*",
         "raven/raven": "0.11.*"
     },
     "autoload": {
         "psr-0": {
             "Networkteam\\SentryClient": "Classes"
         }
     }
-}
+}