Merge pull request #289 from fastlane/bump-version-0.4.0.pre.1

Bump version to 0.4.0.pre.1

Author: rebehe

lib/fastlane/plugin/firebase_app_distribution/version.rb

@@ -1,5 +1,5 @@
 module Fastlane
   module FirebaseAppDistribution
-    VERSION = "0.3.8"
+    VERSION = "0.4.0.pre.1"
   end
 end