Merge pull request #1881 from victorpopkov/update/sketch-beta

updated sketch-beta (3.7,28138)

Casks/sketch-beta.rb

@@ -1,11 +1,11 @@
 cask 'sketch-beta' do
-  version '3.7,195'
-  sha256 'a26d6a3d00e825cbdd15bcff95cc071eb02e4bd9028305c062358e3033a971e1'
+  version '3.7,28138'
+  sha256 '8c20063058983568d704ff7bf0fd6f19dd5681280b24a5abb5058365e9d9bb7d'
 
   # hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b/app_versions/#{version.after_comma}?format=zip"
   appcast 'https://rink.hockeyapp.net/api/2/apps/0172d48cceec171249a8d850fb16276b',
-          checkpoint: '838b4ea87f3deab35b9ec53c5337422cd86a630f51199103ba35ed2a7c9aa3bd'
+          checkpoint: '170f9836befea0a7e05a06919bf5247bb857c1d4f3437d6751465227b2abdf84'
   name 'Sketch'
   homepage 'http://bohemiancoding.com/sketch/beta/'
   license :commercial