Updated podspec

Closures.podspec.json

@@ -1,6 +1,6 @@
 {
   "name": "Closures",
-  "version": "0.4",
+  "version": "0.5",
   "summary": "Swifty closures for UIKit and Foundation",
   "homepage": "https://github.com/vhesener/Closures",
   "screenshots": [
@@ -14,10 +14,10 @@
   },
   "source": {
     "git": "https://github.com/vhesener/Closures.git",
-    "tag": "v0.4"
+    "tag": "v0.5"
   },
   "source_files": "Xcode/Closures/Source",
   "documentation_url": "https://vhesener.github.io/Closures/",
   "description": "Closures is an iOS Framework that adds closure handlers to many of the popular\nUIKit and Foundation classes. Although this framework is a substitute for \nsome Cocoa Touch design patterns, such as Delegation and Data Sources, and \nTarget-Action, the authors make no claim regarding which is a better way to \naccomplish the same type of task. Most of the time it is a matter of style, \npreference, or convenience that will determine if any of these closure extensions \nare beneficial.\n\nWhether you’re a functional purist, dislike a particular API, or simply just \nwant to organize your code a little bit, you might enjoy using this library.",
-  "pushed_with_swift_version": "4.2"
+  "pushed_with_swift_version": "5.0"
 }