Bump version to 0.8.0

WWLayout.podspec

@@ -9,15 +9,15 @@
 Pod::Spec.new do |s|
 
   s.name            = "WWLayout"
-  s.version         = "0.7.1"
+  s.version         = "0.8.0"
   s.summary         = "Swifty DSL for programmatic Auto Layout in iOS"
   s.description     = "WWLayout is an elegant way to add auto-layout constraints with code."
   s.homepage        = "https://ww-tech.github.io/wwlayout/"
 
   s.license         = "Apache-2.0"
   s.author          = { "Steven Grosmark" => "steven.grosmark@weightwatchers.com" }
   s.platform        = :ios, "9.0"
-  s.swift_versions  = '4.0', '4.2', '5', '5.1', '5.2'
+  s.swift_versions  = '4.0', '4.2', '5', '5.1', '5.2', '5.3'
 
   s.source          = { :git => "https://github.com/ww-tech/wwlayout.git", :tag => s.version.to_s }
   s.source_files    = "Sources/WWLayout", "Sources/WWLayout/**/*.{h,m,swift}"