version: bump version to 0.5.0-beta

Author: alexbosworth

version.go

@@ -22,8 +22,8 @@ const semanticAlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqr
 // versioning 2.0.0 spec (http://semver.org/).
 const (
 	appMajor uint = 0
-	appMinor uint = 4
-	appPatch uint = 1
+	appMinor uint = 5
+	appPatch uint = 0
 
 	// appPreRelease MUST only contain characters from semanticAlphabet per
 	// the semantic versioning spec.