Add Fantastical 1.X

Fantastical is now on 2.X which we'll track in the main tap.

Refs caskroom/homebrew-cask#10223

Casks/fantastical1.rb

@@ -0,0 +1,15 @@
+cask :v1 => 'fantastical' do
+  version '1.3.18'
+  sha256 '00069dca92be66b04351cb9b19146c305696fb5970b33e71c1b2d687bbc5f2a8'
+  url "http://cdn.flexibits.com/Fantastical_#{version}.zip"
+  appcast 'https://flexibits.com/fantastical/appcast.php',
+    :sha256 => '3d789ff8dd91c8ebc1b63d2811ec17e0a950433b03605d8c10eef010733cf79a'
+  name 'Fantastical'
+  homepage 'http://flexibits.com/fantastical'
+  license :freemium
+  app 'Fantastical.app'
+  postflight do
+    suppress_move_to_applications
+  end
+  zap :delete => '~/Library/Preferences/com.flexibits.fantastical.plist'
+end